000 00708cam a2200157ua 4500
041 _aeng
_h
082 _a690.22
_bBUR/SA
110 1 _aBureau of Indian Standards .
_b
_c()
245 _aSafety requirements for floor and wall openings, railings and toe boards 4912-1978 /
_cBureau of Indian Standards.
_hTextual Documents
250 _a1 /
_b.
260 _a :
_bBureau of Indian Standards ,
_c1989.
300 _a10 ; .
504 _a
942 _cBK
999 _c261686
_d261686