DIN 18309:2019-09 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Ground treatment by grouting
2019DIN 18309:2019-09 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Ground treatment by grouting
2012DIN 18309:2012 German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Ground treatment by grouting