TY  - BOOK
ED  - Bureau of Indian standards                                                                                                                                                                                                                                     . 
TI  - Code of basic requirements for water supply ,drainage and sanitation , 1172-1983 / 
U1  - 696.1 
PY  - 1989///
CY  -  : 
PB  - Bureau of Indian standards , 
ER  -