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Vessels and apparatus. Norms and methods of strength calculation. Method of strength calculation of shells and heads according to weld misalignment, angular misalignment and shell nonroundness
Document status: Replaced by GOST 34233.11-2017
Reagents. Colorimetric methods for determination of copper impurity
Document status: Active
Hydrochloric acid for industrial use. Determination of arsenic content by silver diethyldithiocarbamate photometric method
Document status: Active
Peat and products of its processing for agriculture. Methods for the determination of exchange and active acidity
Document status: Active
