2016DIN 1961:2016-09 German construction contract procedures (VOB) - Part B: General conditions of contract relating to the execution of construction work
2016DIN 1961:2016 German construction contract procedures (VOB) - Part B: General conditions of contract relating to the execution of construction work
2012DIN 1961:2012 German construction contract procedures (VOB) - Part B: General conditions of contract relating to the execution of construction work
0000 DIN 1961:2010
2006DIN 1961:2006 German construction contract procedures - Part B: General conditions of contract relating to the execution of building works