DIN 19623:1978-01

Отменен

Filter Sands and Filter Gravels for Water Purification Filters; Technical Conditions of Delivery — 4 стр.

Заменен на

DIN EN 12904:1999-11

ICS

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