DIN 4261-3:1983-10

Отменен

Small sewage treatment plants; plants without sewage aeration; operation and maintenance — 2 стр.

Заменен на

DIN 4261-3:1990-09

ICS

13.060.30 Sewage. Including sewage water disposal and treatment / Сточные воды. Включая удаление и очистку сточных вод