नेपाल सरकार भौतिक पूर्वाधार तथा यातायात मन्त्रालय सडक विभाग गुणस्तर अनुसन्धान तथा बिकास केन्द्र

IRC 21_ STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES, SECTION_ III CEMENT CONCRETE (PLAIN AND REINFORCED) (Third Revision),2000

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IRC 21_ STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES, SECTION_ III  CEMENT CONCRETE (PLAIN AND REINFORCED) (Third Revision),2000


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