Classification
LWH - Agriculture - soil sciences
3
HRR - X-ray diagnostics, computer tomography
2
UCG - Control of environmental pollution
2
CEC - Organic chemistry - comprehensive works
1
CET - Special organic compounds - synthesis and reactions
1
CLN - Supramolecular chemistry
1
EXA - Energy policy
1
FGCD - Crystal growth of specific substances
1
FPHB - Crack phenomena
1
LWW - Agriculture - transfer factors, radioagronomy
1
MAK - Mathematics - formulae, tables
1
UMK - Air pollution - general aspects
1
UPK - Water resources, water supply
1
URA - Soil chemistry
1