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DD 4:1971

Заменен
Recommendations for the grading of windows. Resistance to wind loads, air infiltration and water penetration, and with notes on window security
ICS
91.060.50 Doors. Including doorsets, their components, blinds, shutters / Двери и окна. Включая дверные блоки, их компоненты, жалюзи, ставни