000 00247nam a2200073 4500
080 _a
_b
245 _aBS: 5060 - 1987/IEC-879 - 1986; Performance and construction of electric circulating fans and regulators
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1987
300 _a11p
999 _c33336
_d33336