TY  - BOOK
ED  - Indian Standards Institution                                                                                                                                                                                                                                   . 
TI  - Specification for precast concrete lintels and sills, IS9893-1981 / 
U1  - 666.977 
PY  - 1982///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -