Classification
CAA - Chemistry - reference books
2
DAA - Information technology - reference books
2
EAA - Energy - reference books
2
GAA - Geosciences - reference books
2
HAA - Medicine - reference books
2
LAA - Biology - reference books
PAA - Physics - reference books
2
TAA - Engineering sciences - reference books
YAA - Law, economy, social affairs - reference books
1