Classification
EXA - Energy policy
2
HTE - Oncology - general
2
MDA - Foundations of mathematics
2
PAM - Physics - miscellaneous topics
2
AHF - Research and science
1
CT - Chemical methods of materials analysis
1
CUO - Molecular spectroscopy
1
EFA - Petroleum, natural gas
1
HTJ - Tumors
1
HWF - Ophthalmology
1
LGVC - Visual perception, imaging systems
1
LKP - Biochemistry of carbohydrates
1
MLD - Approximation theory
1
PBA - Quantum theory
1
PKKA - Quantum field theory
1
ZBDB - Quality management
1
ZBEB - Catalogues, cataloguing
1
ZBEBB - Subject indexing
1
ZBEC - Reader services, inquiry service
1
ZBECA - Circulation
1
ZBJ - Library types
1