Classification
TAA - Engineering sciences - reference books
10
PAA - Physics - reference books
6
YNA - Patents, trademarks
4
CH - Physical chemistry
3
EXA - Energy policy
3
FAAD - Metallic materials - reference books
3
FMPJ - Steels and ferrous alloys for specific applications
3
TNA - Nuclear engineering - general
3
TND - Gas cooled reactor types
3
CB - Inorganic chemistry
2
DPA - Electronic data processing - applications
2
FAAC - Engineering materials - reference books
2
FPM - Materials testing - general aspects
2
TBC - Electronic circuits
2
TBJ - Integrated circuits
2
TBS - Digital electronics
2
UA - Environment - general
2
UXU - Radioactive waste solidification
2
ACA - Languages, dictionaries - general
1
ACE - Germanic languages, Indo-Germanic languages
1
ACH - Romance languages
1
ACZ - Lists of abbreviations
1
AFM - Research institutions - Europe
1
AMA - Education - general
1
AXN - Phrase books, language courses
1
AZZ - Firm index - general
1
CE - Organic chemistry
1
CHJ - Molecular physics, molecular structure
1
CUA - Spectroscopy
1
CWB - Chemical engineering - comprehensive works
1
CWE - Chemical engineering, chemical industry - general
1
CXUR - Surfactants
1
DAA - Information technology - reference books
1
DSA - Computer graphics, image/photo editing
1
EHA - Renewable energy sources
1
FAAA - Crystallography - reference books
1
FAAE - Nonmetallic materials - reference books
1
FCA - Crystallography
1
FFJK - Surface reactions
1
FFM - Liquid interfaces, adhesion
1
FNJ - Plastics - general aspects
1
GAB - Geosciences - dictionaries
1
GHH - Sedimentary petrography - general
1
GHM - Sedimentary rocks
1
LAA - Biology - reference books
1
LVE - Food science - general
1
LWE - Agriculture - general aspects
1
TAB - Engineering sciences - dictionaries
1
TBF - Semiconductor devices
1
UPCE - Water chemistry
1
more ...