Classification
AFA - Research institutions, scientific organizations - international and supranational
34
UEG - Environmental programs and expertises
3
PKAE - Elementary particles, nuclei (reports)
2
ACA - Languages, dictionaries - general
1
AED - Official corporations - international and supranational
1
AEX - Universities, academies - non-Europe
1
AFW - Subject oriented organizations
1
AHA - Research and development, research politics - general
1
AHF - Research and science
1
AJA - Directories - general
1
FAQ - Materials research - institutions, research and development
1
FHN - Neutron scattering
1
PGA - Plasma physics
1
PGAE - Plasma physics (reports)
1
PGK - Fusion plasmas, fusion research
1
PKA - Elementary particles, nuclei - general
1
PKG - Accelerators
1
TNA - Nuclear engineering - general
1
UAX - Environment - information systems, literature guides
1
UXPN - Nonproliferation, nuclear weapons
1
YRC - Technology and society
1
ZBAC -Library directories, register of persons
1
ZBJB - Library federations
1