TY  - BOOK
AU  - ,  .
ED  - Indian Standards Institution                                                                                                                                                                                                                                   . 
TI  - Guide for daylighting of buildings, IS2440-1978 / 
U1  - 628.92 
PY  - 1989///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -