Classification
GNA - Geology - soil sciences
14
LWH - Agriculture - soil sciences
8
URA - Soil chemistry
8
LCN - Ecology - soil sciences
6
LCNA - Soil microbiology
2
LWW - Agriculture - transfer factors, radioagronomy
2
GAN - Geosciences - mathematical methods, computer applications
1
GDAB - Rock mechanics, soil mechanics
1