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Reference Database
The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. The ADS maintains three bibliographic databases containing more than 13 million records covering publications in Astronomy and Astrophysics, Physics, and the arXiv e-prints. Abstracts and full-text of major astronomy and physics publications are indexed and searchable through the new ADS modern search form as well as a classic search form.
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Subject: Astronomy
Agriculture
9
Anthropology
4
Archaeology
5
Arts
10
Astronomy
Biology
13
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Business
5
Chemistry
4
Computer Science
4
Earth Science
5
Economics
11
Education
13
Engineering
6
Environmental Studies
6
Genetics
5
History
11
Information Science
4
Law
15
Linguistics
6
Literature
6
Materials Science
2
Mathematics
4
Medicine
8
Multidisciplinary
21
Music
1
Pharmacology
6
Philosophy
3
Physics
4
Political Science
11
Psychology
15
Religion
2
Social Work
3
Sociology
19
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