Classification
USN - Waste water treatment
24
USK - Waste water
7
UPCE - Water chemistry
3
UPN - Water protection, water quality, clean water
3
USNG - Waste water treatment - biological aspects
3
AMAB - Industrial training, further education
1
LHH - Microbiology - methods
1
UAD - Environment - comprehensive works
1
UCQ - Environmental technology
1
UPT - Water pollution control and measurement
1
UPW - Drinking water
1
USKH - Special waste waters
1
USNH - Waste water treatment - special methods
1
YEC - Law on waters
1
YEG - Law on waste, law on pollution
1