Indian Standard Institution, .
Specification for pre-stressed concrete poles for cross head power ,traction and telecommunication lines ,IS:1678-1978 - New Delhi : Indian Standards Institution , 1979. - 16 ; .
7.00
621.315 / IND/SP
Specification for pre-stressed concrete poles for cross head power ,traction and telecommunication lines ,IS:1678-1978 - New Delhi : Indian Standards Institution , 1979. - 16 ; .
7.00
621.315 / IND/SP