Classification
ACE - Germanic languages, Indo-Germanic languages
1
ASAA - Library reference works
1
ASCJ - Library catalog
1
CH - Physical chemistry
1
DMA - Programming
1
DMC - Computer programs
1
EUL - Heat pumps
1
HBG - Molecular biology in medicine, human genetics
1
HVC - Cardiology, circulatory system, blood pressure
1
LONK - DNA processes
1
PKA - Elementary particles, nuclei - general
1
THD - Design and construction in mechanical engineering
1
THH - Machines
1
THL - Thermodynamics - technical aspects
1
TIE - Process engineering
1
TKJ - Traffic
1
UMB - Atmospheric chemistry
1
UXL - Radiation protection - general aspects
1
YZA - Politics, political science
1
ZCD - Information retrieval
1