Classification
YDS - Building law
73
YCA - Public law
7
YDX - Contract law
5
TAT - Engineering Standards
4
YDM - Commercial law, commercial legislation
3
TKB - Civil engineering - buildings
2
TEA - Electrical engineering - general
1
TIG - Reliability, safety, quality control
1
TKA - Civil engineering - general
1
YEA - Environmental law
1
YFF - Industrial safety regulations
1
YPG - Business management
1
YPGN - Project management
1