Soil. Methods for determining calcium and magnesium in aqueous extract
Почвы. Методы определения кальция и магния в водной вытяжке. |
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NPB 239-97Ventilation Ducts. Test Method of Fire Resistance |
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GOST 12.2.063-81SSBT. Occupational Safety Standards System. … |
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OST ОСТ 24.050.28-81Passenger cars. Method of vibration measurement … |