Classification
LWE - Agriculture - general aspects
11
LWV - Agriculture - plant protection
7
LCM - Terrestrial ecology
6
LEN - Plant physiology
2
URA - Soil chemistry
2
LCL - Biotopes, ecosystems
1
LCN - Ecology - soil sciences
1
UHP - Protection of nature and landscape
1
UMRC - Effects of air pollution on plants and animals
1