CNIS GB/T 223.51-87 Methods for chemical analysis of iron,steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content. Формат поставки-PDF. Язык стандарта-Английский
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CNIS GB/T 223.51-87 Methods for chemical analysis of iron,steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content
Язык:
Английский
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