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• This database has no access restrictions; it is freely accessible to anyone online.
• Some databases provide free access to some content, but not all content; check the database description for details.

Title		Summary	Date	ID	Author(s)
NAICS North American Industry Classification System Lookup		NAICS North American Industry Classification System Lookup NAICS is the standard used by federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy. Enter a keyword that describes your kind of business. A list of primary business activities containing that keyword and the corresponding NAICS codes will appear. Choose the one that most closely corresponds to your primary business activity, or refine your search to obtain other choices. Full record	Sep 13, 2010
NASA Technical Report Server (NTRS)		NASA Technical Report Server (NTRS) NTRS indexes citations, full-text documents, and multimedia content from NACA and NASA publications and research reports. Content includes conference papers, journal articles, meeting papers, patents, research reports, theses and dissertations, images, movies, and technical videos. Full text available as PDFs. 1903-present.   Full record	Sep 13, 2010	e1000155
NCBI National Center for Biotechnology Information Bookshelf		National Center for Biotechnology Information (NCBI) Bookshelf The NCBI Bookshelf hosts full-text books (mostly as PDFs) that can be searched or browsed. Titles are also linked from other NCBI databases such as PubMed. Full record	Sep 13, 2010
NINES: Nineteenth Century Scholarship Online		N I N E S: Nineteenth Century Scholarship Online NINES (Networked Infrastructure for Nineteenth-Century Electronic Scholarship) indexes citations to publications, manuscripts, art, and photos, with links to full text (some in restricted access databases) and acts as a clearinghouse for peer-reviewed digital resources, which can be collected, annotated, and re-used in online "exhibits." Full record	Apr 23, 2012
National Academies Press		National Academies Press The National Academies Press provides over 4000 free PDF ebooks (most of their published titles). Free registration is required before you can download the PDFs. You can download a single PDF for the entire book, or one for each chapter. We link from the Addison screen for our print copies to the online version on the NAP site. You can browse subject categories or search across the collection. Full record	Jul 30, 2012
National Agriculture Statistics Service (NASS) from USDA		National Agriculture Statistics Service (NASS) from USDA NASS allows searching and browsing of reports and data sets compiled by the National Agricultural Statistics Service. Reports cover virtually every facet of U.S. agriculture—production and supplies of food and fiber, prices paid and received by farmers, farm labor and wages, and other aspects of the farm industry. Data sets are commodity specific and contains many category breakdowns including U.S., state, and county crop and livestock data. Full-text reports available in PDF and text. Reports 1900s-present; data sets 1866-present. Full record	Sep 13, 2010
National Atlas of the United States		National Atlas of the United States The National Atlas of the United States is an interactive, online version of the print atlas. Maps available as GIF and PDF. Vector files are available in Shapefile and SDTS-TVP formats. Geostatistical data are in DBF format. Images are GeoTIFF files. Full record	Sep 13, 2010
National Center for Education Statistics from the US Department of Education		National Center for Education Statistics from the US Department of Education NCES issues numerous publications and datasets each year. These include: early releases, issue briefs, statistical reports, directories, and handbooks of standard terminology, plus library statistics. Reports presented as PDFs; data sets can be customized as HTML tables or downloaded in a variety of formats. Full record	Sep 13, 2010
National Climatic Data Center		National Climatic Data Center The National Climatic Data Center provides data sets on climate and weather, plus full-text publications in PDF that summarize this data. Free access to some data sets requires connecting from a campus computer or through Off Campus Sign In. Full record	Sep 13, 2010
National Defense University Digital Collections		National Defense University Digital Collections Keyword-searchable and browseable archive of the free online books, journals, working papers, and policy briefs published by the US National Defense University. Also includes links to official US national strategy documents and other documents dealing with military policy. Some linked materials are not accessible to non-NDU users. 1984-present. Full record	Sep 13, 2010
National Geographic Society Publications Index		National Geographic Society Publications Index The NGS Publications Index contains over 30,000 citations, each describing a magazine article, book, map, or other Society product,. Use Addison, the library catalog to locate specific issues. 1888-present. Full record	Sep 13, 2010
National Jukebox from the Library of Congress		National Jukebox from the Library of Congress The National Jukebox provides streaming music (via an embedded Adobe Flash player) from their collection of music and spoken word recordings and from other participating libraries. You can browse or search for recordings or playlists. 1910-1929. Full record	Aug 2, 2011
National Library of Medicine Catalog		National Library of Medicine Catalog The NLM Catalog provides access to NLM bibliographic data for journals, books, audiovisuals, computer software, electronic resources and other materials. It contains detailed MEDLINE indexing information about the journals in PubMed and other NCBI databases. Links to the library's holdings in LocatorPlus, NLM's online public access catalog, are also provided. Use Interlibrary Loan to request titles found in this catalog that are not owned locally. Full record	Sep 13, 2010
National Map from the USGS		National Map from the USGS The National Map includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures, and land cover. Other types of geographic information can be added within the viewer or brought in with The National Map data into a Geographic Information System to create specific types of maps or map views. The US Topo Maps module provides electronic access to topological maps previously received in print. Full record	Sep 13, 2010
Networked Digital Library of Theses and Dissertations (NDLTD)		Networked Digital Library of Theses and Dissertations The Networked Digital Library of Theses and Dissertations indexes citations, abstracts, and full-text theses and dissertations from around the world. Many are available in full text through this database (otherwise you may be able to request a copy through interlibrary loan). Early 1900s-present. Full record	Sep 13, 2010
Newspaper Index (Local Newspapers)		Newspaper Index (Local Newspapers) Full-text index of local newspapers. Covers Virginia Tech, Southwest Virginia and the New River Valley, from the Roanoke Times and World News (Jan 1, 1992-Feb 28, 1997), the News Messenger (1963 to June 1998), The Collegiate Times (1970 to June 1998), the Virginia Tech Spectrum (Fall 1994-Spring 2005).   Full record	Sep 13, 2010	e1000278
Nucleotide Database from NLM		Nucleotide Database from NLM The Nucleotide Database is a collection of sequences from several sources, including GenBank, RefSeq, TPA and PDB. Genome, gene and transcript sequence data provide the foundation for biomedical research and discovery. Full record	Sep 13, 2010
OMIA: Online Mendelian Inheritance in Animals from NLM		OMIA: Online Mendelian Inheritance in Animals from NLM Online Mendelian Inheritance in Animals is a database of genes, inherited disorders and traits in animal species (other than human and mouse) with links to relevant records from OMIM, PubMed, Gene, and soon to NCBI's Phenotype database. Full record	Sep 13, 2010
OMIM: Online Mendelian Inheritance in Man from NLM		OMIM: Online Mendelian Inheritance in Man from NLM Online Mendelian Inheritance in Man (OMIM) is a compendium of human genes and genetic phenotypes. The full-text, referenced overviews in OMIM contain information on all known mendelian disorders and over 12,000 genes. OMIM focuses on the relationship between phenotype and genotype. Full record	Sep 13, 2010