DIN 51077-3:1972-04

Отменен

Testing of ceramic materials; chemical analysis of refractories containing 45 to 95 per cent of alumina, determination of alumina — 2 стр.

Заменен на

DIN EN 955-2:1995-06

ICS

81.080 Refractories. Including ceramic refractories / Огнеупоры. Включая огнеупоры из керамики