TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:5312-(Pt.2)-1986. Indian standard specification for swing check type reflux (non-return) valves for water works purpose. Pt.2 : multidoor pattern
U1  - IS Code 
PY  - 1987///
CY  - New Delhi
PB  - Bureau of Indian Standards
N1  - ENG
ER  -