DIN 18321:2019-09 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Jet grouting work
2019DIN 18321:2019-09 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Jet grouting work
2016DIN 18321:2016 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Jet grouting work
2015DIN 18321:2015 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Jet grouting work
2012DIN 18321:2012 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Jet grouting work