| System of Design Documents for Construction. Symbols for Presentation of Pipelines.
Система проектной документации для строительства. Условные обозначения трубопроводов. |
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SakhalinRL 31-PAIssuing Construction Permits in Sakhalin Region |
SNiP 2.03.01-84Concrete and Reinforced Concrete Structures. |
GD 173Issues of the federal road agency |