00429nam a2200133Ia 4500008004100000041000800041082001400049100003000063245011800093250000800211260004700219300000700266650002200273230711s9999||||xx |||||||||||||| ||und|| aENG a624bBU-I aBureau of Indian Standard 0aIS : 4091 1979bCode of practice for design and construction of foundation for transmission line towers and poles a1st c1980aNew DelhibBureau of Indian Standard a17 aCivil Engineering