000 00233nam a2200073 4500
080 _a
_b
245 _aIS: 7290 - 1979; Recommendations for use of polyethylene film for waterproofing of roofs
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1980
300 _a16p
999 _c29119
_d29119