Classification
AQO - International bibliographies and lists of books in print
32
ACE - Germanic languages, Indo-Germanic languages
5
EXA - Energy policy
5
PGA - Plasma physics
3
YPB - Economy - general aspects
3
CH - Physical chemistry
2
EPA - Uranium - nuclear fuel
2
EPK - Nuclear energy
2
FFA - Surface science, surface physics - general aspects
2
HAA - Medicine - reference books
2
HPA - Drug lists, pharmacopoeias, pharmacologic glossaries
2
LCK - Ecology - general aspects
2
MFAA - Combinations, graphs, tournaments
2
MWH - Statistics
2
MWHF - Experimental design, variance analysis
2
AEX - Universities, academies - non-Europe
1
AHZ - History of science and technology
1
CAV - Chemicals, chemical reagents
1
CELD - Chemicals and reagents in organic synthesis
1
CTDP - Reagents and reference materials in analytical chemistry
1
DAA - Information technology - reference books
1
EFA - Petroleum, natural gas
1
EGA - Oil shale, oil sands
1
EUA - Energy conservation - general
1
FAM - Solid state physics - general theory
1
FFP - Physics of thin films
1
FFPE - Thin film electronic properties, semiconductor interfaces
1
FHTD - Mössbauer spectroscopy
1
FKC - Magnetism - specific aspects
1
FKG - Magnetic materials
1
FLE - Superconductor materials
1
GBA - General geology, historical geology
1
GWB - Raw materials - metals, nonmetals
1
HPK - Special pharmacology, drug design
1
LAA - Biology - reference books
1
LAL - Biology - general aspects
1
LCM - Terrestrial ecology
1
LONG - Gene expression, regulation
1
LTU - Genetic engineering
1
LTV - Green genetic engineering
1
LVE - Food science - general
1
LWP - Agriculture - animal husbandry
1
LWV - Agriculture - plant protection
1
MKBH - Nonlinear PDE
1
MKDD - Special integral equations
1
MNL - Computational methods - general
1
MSB - Chaos, nonlinear dynamical systems
1
MWHL - Modeling, classification, clustering
1
PAA - Physics - reference books
1
PGH - Plasma diagnostics
1
more ...