000 00211nam a2200073 4500
080 _a
_b
245 _aIS: 6143 - 1971 : Specification for Sheaves Used with Ship`s Blocks
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1972
300 _a9p
999 _c25613
_d25613