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DIN 8975-7:1980-09

Отменен
Refrigeration Plants; Safety Principles for Construction, Equipment, Erection and Operation. Safety Devices in Refrigeration Plants against Unallowable Pressure Stresses — 6 стр.
DIN 8975-7:1980-09
Отменен
DIN 8975-7:1989-02
Отменен