Classification
HYB - Public health, health politics
150
HBM - Medical microbiology, infectious diseases
12
HAA - Medicine - reference books
10
AEG - Official corporations - Germany
8
HDG - Psychology, psychiatry
7
HYG - Occupational medicine, sports medicine
7
HDE - Neurology - general aspects
5
YRB - Social sciences, sociology
5
HAM - Medicine - theoretical and philosophical fundamentals
4
HAN - Medicine - mathematical methods, computer applications, databases
4
YFF - Industrial safety regulations
4
YPW - Economy of industry branches
4
HJK - Clinical immunology, allergy, immunosuppression
3
HYE - Environmental health
3
LVE - Food science - general
3
MSH - Mathematical methods in life sciences
3
UVC - Environmental chemicals, hazardous materials - general aspects
3
AHA - Research and development, research politics - general
2
GNA - Geology - soil sciences
2
HCI - Radiation biology, dosimetry
2
HPK - Special pharmacology, drug design
2
HYH - Traumatology, emergency medicine, disasters
2
LTU - Genetic engineering
2
LWH - Agriculture - soil sciences
2
UKA - Environmental damage and energy production
2
YDMB - Trade law
2
YFH - Social legislation
2
YRE - Risk assessment
2
YZA - Politics, political science
2
AHC - Research and development, research politics - Germany
1
AHPC - Ethics
1
AMA - Education - general
1
CAU - Laboratory and safety engineering in chemistry
1
CHRV - Water and its properties
1
DZE - Data privacy, data security
1
EBA - Energy production, energy technology
1
ECA - Energy resources
1
GPA - Geobiology - general
1
GTA - Hydrology - general
1
GVA - Oceanography
1
HAE - Popular medicine
1
HAJ - Medicine - comprehensive works
1
HBC - Physiological chemistry, biochemistry
1
HBX - Experimental medicine, laboratory animals
1
HCR - Imaging techniques in medicine
1
HEG - Endocrinology
1
HJB - Immunology - comprehensive works
1
HPM - Pharmaceutical industry
1
HPT - Toxicology
1
HRD - Dosimetry, radiation protection - medical aspects
1
more ...