TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Specification for steel doors windows and ventilators,IS:1038-1983 / 
U1  - 690.28 
PY  - 1987///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -