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ProQuest Dissertations and Theses (PQDT) is an online database that indexes, abstracts, and provides full-text access to dissertations and theses. The database includes over 2.4 million records and covers 1637 to the present. [1] [2] It is produced by ProQuest and was formerly known as ProQuest Digital Dissertations.
The Golm Metabolome Database (GMD) is a reference mass spectra library of biologically active metabolites quantified using gas chromatography (GC) coupled to mass spectrometry (MS). Free online search; offline use by subscription Golm Metabolome Database [67] Google Patents: Patents: Free Google: Google Scholar: Multidisciplinary Free Google [68]
This is a list of online databases accessible via the ... Internet Off-Broadway Database; Internet Public Library; ... List of academic databases and search engines;
It is a national-level program based at the Library of Congress that seeks to promote free access to the documentary heritage of the United States. It does this by providing cataloging for archives and historical societies around the country that do not have access to national online databases. [1]
According to its literature, [6] it was "the world's first online information retrieval system to be used globally with materially significant databases". In the 1980s, a low-priced dial-up version of a subset of Dialog was marketed to individual users as Knowledge Index . [ 7 ]
Newer generations of library catalog systems, typically called discovery systems (or a discovery layer), are distinguished from earlier OPACs by their use of more sophisticated search technologies, including relevancy ranking and faceted search, as well as features aimed at greater user interaction and participation with the system, including tagging and reviews.
If you arrived at this page by clicking an ISBN link in a Wikipedia page, you will find the full range of relevant search links for that specific book by scrolling to the find links below. To search for a different book, type that book's individual ISBN into this ISBN search box .
Library websites can offer: [1] Interaction with the library catalog. An Online Public Access Catalog (OPAC) provides the ability log into a library account to renew or request items. Gateway to electronic resources. Libraries may organize the various periodical indexes, electronic reference collections, and other databases they subscribe to.