000 00454 a2200241 4500
001 283143
020 _a
041 _aeng
080 _aDBSI 4947 : 1984
245 _aBritish standard specification for test gases for gas appliances
250 _a
260 _aLondon
260 _bBSI
260 _c1984
300 _a7 p.
300 _c
856 _u
490 _aBSI 4947 : 1984
700 _a
650 _a
650 _a
942 _cPP
942 _2UDC
999 _c243065
_d243065