Classification
UVC - Environmental chemicals, hazardous materials - general aspects
3
YDX - Contract law
3
YEF - Law on hazardous materials
3
YPG - Business management
3
TCA - Communication science - general
2
ACA - Languages, dictionaries - general
1
DAE - Information technology - general
1
TIE - Process engineering
1
TKB - Civil engineering - buildings
1
YPGD - Quality management
1
YRA - Social studies
1