Classification
TEA - Electrical engineering - general
20
TAA - Engineering sciences - reference books
19
THA - Mechanical engineering - general
16
PAD - Physics - comprehensive works
10
CAU - Laboratory and safety engineering in chemistry
8
TBA - Electronic engineering - general
8
YPGE - Human resource planning, human resource management
6
AMA - Education - general
5
CAA - Chemistry - reference books
5
TBS - Digital electronics
5
CBB - Inorganic chemistry - comprehensive works
4
AMAB - Industrial training, further education
3
CEC - Organic chemistry - comprehensive works
3
TCP - Microcomputers
3
THD - Design and construction in mechanical engineering
3
AHP - Philosophy
2
CELC - Organic synthesis
2
CHX - Chemical thermodynamics
2
CTF - Chemical analytical methods
2
CTFH - Volumetry
2
TBR - Analog electronics
2
TEF - Electric machines, electric cables
2
TGE - Measuring instruments
2
TIE - Process engineering
2
TKD - Air conditioning, refrigeration
2
YPF - Labour science
2
YPH - Secretarial work, office management
2
ACA - Languages, dictionaries - general
1
ACE - Germanic languages, Indo-Germanic languages
1
AHJ - Training methods
1
AQBE - Reference guides - chemistry
1
CAE - Chemistry - general
1
CAN - Chemistry - mathematical methods, computer applications
1
CAS - Chemistry - periodic system
1
CAV - Chemicals, chemical reagents
1
CAX - Chemistry - information systems, literature guides
1
CBM - Inorganic synthesis and reactions of the elements and their compounds - general aspects
1
CEF - Organic chemistry - introductions
1
CEL - Organic synthesis and reactions - general aspects
1
CHJ - Molecular physics, molecular structure
1
CTD - Chemical analysis - general aspects
1
CTR - Chromatography
1
CTS - Gas chromatography
1
CTTE - High performance liquid chromatography
1
CWO - Separation and combination processes - mechanical
1
CWS - Separation processes - nonmechanical
1
DMAF - Object oriented programming
1
DOE - Programming language - BASIC, Turbo BASIC, Visual BASIC
1
DOW - Programming language - LABVIEW, MATLAB
1
EAA - Energy - reference books
1
more ...