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Drilling rigs for drilling of hydrogeological bore holes. Types. Basic parameters
STANDARD published on 1.7.1991
Designation standards: GOST 28802-90
Publication date standards: 1.7.1991
SKU: NS-391363
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: Russian technical standard
Category: Technical standards GOST
1.7.1984
1.1.1985
1.1.1997
1.1.2000
1.7.2000
1.1.2001
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