TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Specification for hot rolled steel section for doors ,windows and ventilators,IS:7452-1982 / 
U1  - 669.14 
PY  - 1987///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -