| Soils. Methods for determination of conductivity, pH, and dissolved solids of aqueous extract
Почвы. Методы определения удельной электрической проводимости, pH и плотного остатка водной вытяжки |
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SNiP III-4-80Construction Safety Rules |
GOST 12730.5-84Concrete. Methods for determining water resistence |
GD 315On approving regulations on protected zones for … |