DIN 19569-9:2016-02

Отменен

Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 9: Mechanical drainage of sewage sludge

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DIN 19569-9:2017-02

Действует

Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 9: Mechanical drainage of sewage sludge — 27 стр.