Tendering and performance stipulations in contracts for construction works (VOB); part C: general technical specifications in contracts for construction works (ATV); underground drainage— 6 стр.
German construction contract procedures - Part C: General technical specifications for building works - General rules for all kinds of building works— 15 стр.
German construction contract procedures - Part C: General technical specifications for building works - Gas, water and sewage plumbing works inside of buildings— 20 стр.
