DIN 12892:1977-03

Отменен

Metal laboratory ware; stand bases — 2 стр.

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Отменен

Testing of glass; determination of the acid resistance (gravimetric method) and classification of glass into acid classes — 3 стр.

Отменен

Testing of glass; determination of the resistance to attack by alkali and classification of glass into alkali classes — 3 стр.

Отменен

Teaching, learning and training equipment; stand rods; bossheads, tripods and table clamps — 3 стр.