000 00259nam a2200073 4500
080 _a
_b
245 _aIS: 778 - 1984 Reaffirmed 1990; Specification for copper alloy gate, globe and check valves for water works purposes
700 _aBureau of Indian Standards
260 _aNew Delhi
_bBIS
_c1986
300 _a25p
999 _c34588
_d34588