TY  - BOOK
ED  - Indian Standards Institution
TI  - Specification for steel doors, windows and ventilators
U1  - 693.7021 
PY  - 1958///
CY  - New Delhi
PB  - ISI
KW  - Steel construction building
KW  - Steel doors
KW  - Steel windows
KW  - Ventilators
ER  -