Classification
GNA - Geology - soil sciences
20
URA - Soil chemistry
6
LCN - Ecology - soil sciences
3
LWH - Agriculture - soil sciences
2
AXZ - Atlasses
1
CXUR - Surfactants
1
GHMA - Clay, shale
1
GMAB - Hydrogeochemistry
1
GRB - Climatology
1
GTAK - Hydrogeology
1
LCM - Terrestrial ecology
1
LWW - Agriculture - transfer factors, radioagronomy
1
THL - Thermodynamics - technical aspects
1
UXW - Underground disposal of radioactive waste
1
YRA - Social studies
1