Classification
YPB - Economy - general aspects
1,110
UA - Environment - general
1,101
EXA - Energy policy
1,021
CT - Chemical methods of materials analysis
807
PKA - Elementary particles, nuclei - general
802
CWE - Chemical engineering, chemical industry - general
797
CBA - Gmelin handbook
723
TNO - Nuclear reactor safety
718
EPK - Nuclear energy
715
FAF - Materials research - comprehensive works
710
MSD - Mathematical methods in physics
695
PAD - Physics - comprehensive works
687
YBB - Law - general
678
EHA - Renewable energy sources
672
HDS - Neurophysiology, neuroanatomy
672
THQ - Fluid mechanics and dynamics
671
T - Engineering sciences ( journals )
649
TND - Gas cooled reactor types
648
YPG - Business management
615
HDG - Psychology, psychiatry
607
PLA - Astrosciences - general
605
UMV - Climatic change
577
LWE - Agriculture - general aspects
557
AHP - Philosophy
551
CEA - Beilstein handbook
547
MWH - Statistics
547
HCI - Radiation biology, dosimetry
543
LHL - Microbiology - general aspects
543
YZA - Politics, political science
533
HCR - Imaging techniques in medicine
530
LKH - Biochemistry - methods
530
YRA - Social studies
522
CAA - Chemistry - reference books
520
C - Chemistry ( journals )
517
FGN - Nanotechnology
516
MWF - Programming, optimization, control theory
516
TEA - Electrical engineering - general
516
PBA - Quantum theory
507
TNA - Nuclear engineering - general
506
P - Physics ( journals )
499
AFG - Large scale research institutions (Helmholtz Centres)
488
AHF - Research and science
484
CH - Physical chemistry
475
HCN - Nuclear medicine
467
LMN - Molecular biophysics, biophysical chemistry
464
HTE - Oncology - general
463
LRH - Cytology - methods
463
UED - Environmental policy
462
DMA - Programming
458
DYA - Artificial intelligence
452
more ...