Classification
TAA - Engineering sciences - reference books
21
AFG - Large scale research institutions (Helmholtz Centres)
7
AQTC - Publication lists of institutions - Germany
7
ACE - Germanic languages, Indo-Germanic languages
3
DAA - Information technology - reference books
3
TAB - Engineering sciences - dictionaries
3
ACA - Languages, dictionaries - general
2
ACH - Romance languages
1
AEX - Universities, academies - non-Europe
1
AFA - Research institutions, scientific organizations - international and supranational
1
DPA - Electronic data processing - applications
1
DYAK - Cybernetics
1
EAB - Energy - dictionaries
1
EBA - Energy production, energy technology
1
EIA - Solar energy - general
1
EPK - Nuclear energy
1
FAAE - Nonmetallic materials - reference books
1
FNJ - Plastics - general aspects
1
HAA - Medicine - reference books
1
TBD - Microelectronics
1
TCA - Communication science - general
1
TNA - Nuclear engineering - general
1
TNJ - Nuclear reactor technology
1
UMG - Technology of clean air
1
UMGH - Gas cleaning
1
UMNE - Air pollution by gaseous pollutants
1
UMNG - Air pollution by solid pollutants - incl. smog
1