Specification for unreinforced corrugated and semi corrugated asbestos cement sheets ,IS:459-1970 / Textual Documents Indian standards institution. - ISI , 1981. - 10 ; .



691.326 / IND/SP
Kerala Agricultural University Central Library
Thrissur-(Dt.), Kerala Pin:- 680656, India
Ph : (+91)(487) 2372219
E-mail: librarian@kau.in
Website: http://library.kau.in/