DIN 4266-3
DIN 4266-3
Drainage pipes for landfills - Part 3: Drainage pipes and fittings and their joints made from concretestandard by Deutsches Institut Fur Normung E.V. (German National Standard), 01/01/2015
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 01/01/2015