Classification
YRE - Risk assessment
38
UMV - Climatic change
34
TEA - Electrical engineering - general
32
YPG - Business management
30
YRA - Social studies
30
FHE - Imaging methods in materials characterization
28
UED - Environmental policy
24
UMB - Atmospheric chemistry
23
CHA - Physical chemistry - comprehensive works
22
YFA - Labour legislation
22
YPB - Economy - general aspects
22
YRC - Technology and society
22
EXA - Energy policy
21
AHF - Research and science
20
TND - Gas cooled reactor types
19
YHA - Industrial property law, licensing rights
19
YBB - Law - general
18
AMA - Education - general
16
DYK - Image processing
16
EHA - Renewable energy sources
16
GNA - Geology - soil sciences
16
PKA - Elementary particles, nuclei - general
15
THE - Computer aided design and engineering (CAD)
15
YPD - Business economics
15
ACZ - Lists of abbreviations
14
DCA - Informatics - theoretical
14
MWH - Statistics
14
YKP - German civil law
14
HDE - Neurology - general aspects
13
HYE - Environmental health
13
TBA - Electronic engineering - general
13
YZA - Politics, political science
13
DUA - Text and document processing
12
EBA - Energy production, energy technology
12
HDG - Psychology, psychiatry
12
TKB - Civil engineering - buildings
12
YDX - Contract law
12
AHP - Philosophy
11
DOL - Programming language - Python
11
FHG - Electron microscopy
11
HCR - Imaging techniques in medicine
11
HDS - Neurophysiology, neuroanatomy
11
MSD - Mathematical methods in physics
11
PBA - Quantum theory
11
PLA - Astrosciences - general
11
UCA - Environmental problems, man and environment - general aspects
11
CAN - Chemistry - mathematical methods, computer applications
10
CEC - Organic chemistry - comprehensive works
10
CEF - Organic chemistry - introductions
10
DYA - Artificial intelligence
10
more ...