DIN 18381:2019-09 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Installation of gas, water and drainage pipework inside buildings
2019DIN 18381:2019-09 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Installation of gas, water and drainage pipework inside buildings
2016DIN 18381:2016 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Installation of gas, water and drainage pipework inside buildings
2012DIN 18381:2012 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Installation of gas, water and drainage pipework inside buildings
2006DIN 18381:2006 German construction contract procedures - Part C: General technical specifications for building works - Gas, water and sewage plumbing works inside of buildings