Classification
DAA - Information technology - reference books
12
LAA - Biology - reference books
PAA - Physics - reference books
12
CAA - Chemistry - reference books
11
EAA - Energy - reference books
11
GAA - Geosciences - reference books
11
TAA - Engineering sciences - reference books
11
HAA - Medicine - reference books
9
AQPD - Bibliographies of theses / dissertations
5
YAA - Law, economy, social affairs - reference books
3
FAA - Materials research - reference books
1
MAA - Mathematics - reference books
1