Classification
DCA - Informatics - theoretical
6
DEA - Formal languages, machine oriented, assembler
2
DMA - Programming
2
ACE - Germanic languages, Indo-Germanic languages
1
AXN - Phrase books, language courses
1
CAA - Chemistry - reference books
1
CXUK - Organic products
1
DAE - Information technology - general
1
DOA - Programming languages - general
1
EUR - District heating
1
GCAB - Regional geology - european countries
1
HPK - Special pharmacology, drug design
1
MAN - Mathematics - exercises
1
MDF - Formal languages, coding theory
1
MNA - Numerical mathematics - general
1
PAA - Physics - reference books
1
TCB - Communication and information - theory
1
TNQ - Nuclear reactor operation, control, measurement
1