Classification
THA - Mechanical engineering - general
3
CEC - Organic chemistry - comprehensive works
2
ACA - Languages, dictionaries - general
1
CAN - Chemistry - mathematical methods, computer applications
1
CBB - Inorganic chemistry - comprehensive works
1
CEF - Organic chemistry - introductions
1
CEL - Organic synthesis and reactions - general aspects
1
CELC - Organic synthesis
1
TGE - Measuring instruments
1
THD - Design and construction in mechanical engineering
1
THJ - Machining
1