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DIN 19551-1:2002-12

Действует
Wastewater treatment plants - Rectangular tanks - Part 1: Settlement tanks with sludge scraper, suction type sludge remover and chain scraper; Types, main dimensions, equipments — 13 стр.
ICS
13.060.30 Sewage. Including sewage water disposal and treatment / Сточные воды. Включая удаление и очистку сточных вод