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German Standard on underground installations
Recent German national standards on arrangement of gas, water, electricity, and other lines underground in streets; main lines shall, in most cases, be under roadways, and supply lines to buildings under sidewalks.
German Standard on underground installations
Recent German national standards on arrangement of gas, water, electricity, and other lines underground in streets; main lines shall, in most cases, be under roadways, and supply lines to buildings under sidewalks.
German Standard on underground installations
Indus Standardization
1932
2 pages
Standard
English
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