Classification
TKB - Civil engineering - buildings
92
YDS - Building law
73
TKA - Civil engineering - general
40
UAU - Fire, fire protection, safety at the workplace, prevention of accidents
38
TKD - Air conditioning, refrigeration
35
YPG - Business management
29
TEA - Electrical engineering - general
28
YDX - Contract law
25
TAT - Engineering Standards
23
CAA - Chemistry - reference books
22
USN - Waste water treatment
21
CT - Chemical methods of materials analysis
20
ACE - Germanic languages, Indo-Germanic languages
19
DSA - Computer graphics, image/photo editing
16
THA - Mechanical engineering - general
16
TAA - Engineering sciences - reference books
15
UXL - Radiation protection - general aspects
15
YEF - Law on hazardous materials
14
CR - Nuclear chemistry, radiation chemistry
13
CAU - Laboratory and safety engineering in chemistry
12
TIG - Reliability, safety, quality control
12
THP - Pressure vessels, boilers, pipes
11
YEA - Environmental law
11
UA - Environment - general
10
UPN - Water protection, water quality, clean water
10
TCC - IT - Information and telecommunication
9
DUA - Text and document processing
8
EUC - Energy conservation - civil engineering
8
TIE - Process engineering
8
UPW - Drinking water
8
UXK - Radiation protection - comprehensive works
8
YCA - Public law
8
YFA - Labour legislation
8
YPA - Economy - encyclopaedic glossaries
8
CWE - Chemical engineering, chemical industry - general
7
HRD - Dosimetry, radiation protection - medical aspects
7
TNJ - Nuclear reactor technology
7
UPK - Water resources, water supply
7
UVC - Environmental chemicals, hazardous materials - general aspects
7
YBB - Law - general
7
YEE - Law on radiation protection
7
YEM - Energy law
7
YFD - Public service legislation
7
YUS - Other statistical data
7
ACA - Languages, dictionaries - general
6
DKAE - Windows
6
LVE - Food science - general
6
TBA - Electronic engineering - general
6
TGN - Control engineering
6
THD - Design and construction in mechanical engineering
6
more ...