Subject
Astronomy
Observations, Astronomical.
13
Physics.
12
Social sciences.
8
Sociology.
5
Computer science.
3
Education.
2
Management information systems.
2
Statistics.
2
Astrophysics.
1
Automotive engineering.
1
Information storage and retrieval.
1
International law.
1
Law of the sea.
1
Linguistics.
1
Text processing (Computer science).
1