00376nam a2200133Ia 4500008004100000041000800041082001400049100003000063245006600093250000800159260004700167300000600214650002200220230711s9999||||xx |||||||||||||| ||und|| aENG a624bBI-I aBureau of Indian Standard 0aIS :269 1989bOrdinary portland cement 33 grade specification a4th c1990aNew DelhibBureau of Indian Standard a7 aCivil Engineering