Classification
AHP - Philosophy
1
ALH - Works of scientists and Nobel prize winners
1
CAD - Chemistry - comprehensive works
1
CBT - Inorganic synthesis and reactions of nonmetals and their compounds
1
EHA - Renewable energy sources
1
GNA - Geology - soil sciences
1
LEE - Botany - general aspects
1
MAE - Mathematics - general interest
1
MAN - Mathematics - exercises
1
PAD - Physics - comprehensive works
1
PAE - Physics - general interest
1
PBG - Relativity, gravitation
1
PKA - Elementary particles, nuclei - general
1
TBA - Electronic engineering - general
1
TEA - Electrical engineering - general
1
THA - Mechanical engineering - general
1