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DIN 16887:1990-07 Determination of the long-term hydrostatic pressure resistance of thermoplastics pipes
DIN 21521-1:1990-07 Rock bolts for mining and tunnelling; terms
DIN 20033:1990-07 Hose fittings; tapered nozzle with clamping nut
DIN 20033:1990-07 Hose fittings; tapered nozzle with clamping nut
DIN 18723-7:1990-07 Field procedure for precision testing of surveying instruments; gyroscopes
DIN 20548:1990-07 Wheel sets for rail vehicles used in mines; rules for measuring
DIN 20550:1990-07 Mine cars size small; components, main dimensions, design
DIN 21531-1:1990-07 Arch supports; arches B 5,4 to B 20,2