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458 - Is 458 1988 Indian Standard SPECIFICATION FOR PRECAST...

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Is 458 : 1988 Gr9 Indian Standard SPECIFICATION FOR PRECAST CONCRETE PIPES ( WITH AND WITHOUT REINFORCEMENT ) ( Third Revision) Second Reprint AUGUST 1997 UDC 621.643.2 [ 666.972 ] 0 Copyright 1989 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 kfQy 1989
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