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DIN 51857:1997-03

Отменен
Gaseous fuels and other gases - Calculation of calorific value, density, relative density and Wobbe index of pure gases and gas mixtures — 12 стр.
ICS
75.160.30 Gaseous. Including liquefied petroleum gases / Газообразное топливо
71.100.20 Gases. Including compressed air and hydrogen / Газы промышленного применения. Включая сжатый воздух