Classification
UMV - Climatic change
52
MSD - Mathematical methods in physics
46
DNC - Internet
41
GVA - Oceanography
36
FGN - Nanotechnology
35
AHP - Philosophy
33
YPB - Economy - general aspects
32
YRA - Social studies
32
D - Computer sciences ( journals )
31
FAF - Materials research - comprehensive works
31
HDE - Neurology - general aspects
31
T - Engineering sciences ( journals )
31
C - Chemistry ( journals )
30
MWH - Statistics
30
THA - Mechanical engineering - general
30
YPG - Business management
30
HCR - Imaging techniques in medicine
28
PGA - Plasma physics
28
PAE - Physics - general interest
27
L - Life sciences ( journals )
26
LWE - Agriculture - general aspects
26
PBA - Quantum theory
26
YRC - Technology and society
26
AFG - Large scale research institutions (Helmholtz Centres)
25
DKAE - Windows
25
LEN - Plant physiology
25
LWV - Agriculture - plant protection
25
PAD - Physics - comprehensive works
25
PKA - Elementary particles, nuclei - general
25
ACE - Germanic languages, Indo-Germanic languages
23
CEB - Houben - Weyl handbook
23
HDG - Psychology, psychiatry
23
LVN - Food science - chemistry, analytics
23
M - Mathematics ( journals )
23
PBG - Relativity, gravitation
23
PLA - Astrosciences - general
23
GRAD - Earth atmosphere, weather
22
GRB - Climatology
22
HDF - Brain - anatomy, function, disorders
22
HDS - Neurophysiology, neuroanatomy
22
MSB - Chaos, nonlinear dynamical systems
22
UCA - Environmental problems, man and environment - general aspects
22
UED - Environmental policy
22
TEA - Electrical engineering - general
21
UCS - Environmental chemistry
21
CUW - Mass spectroscopy
20
DZE - Data privacy, data security
20
FNL - Polymers, plastics - specific materials
20
LKH - Biochemistry - methods
20
LON - Molecular genetics
20
more ...