Classification
TBA - Electronic engineering - general
6
TEA - Electrical engineering - general
4
THA - Mechanical engineering - general
4
TIE - Process engineering
3
TBJ - Integrated circuits
2
THD - Design and construction in mechanical engineering
2
ACA - Languages, dictionaries - general
1
ACE - Germanic languages, Indo-Germanic languages
1
CAA - Chemistry - reference books
1
CHJ - Molecular physics, molecular structure
1
PAD - Physics - comprehensive works
1
PJA - Atomic physics - general
1
TBF - Semiconductor devices
1
TBH - Power electronics, rectifiers, thyristors
1
TCN - Microprocessors
1
TGNE - Control engineering - applications
1
THE - Computer aided design and engineering (CAD)
1