| Guidelines for class I, II, III and IV vertical control surveys.
Инструкция по нивелированию I, II, III и IV классов. |
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GOST 21.302-96SPDS. Standard graphic symbols for geotechnical … |
FATRM 210-7-268On interpretation of the procedure for … |
MISC Order 46 Of March 13, 2000Concerning the Organization of Licensing Work |