000 00406nam a2200133Ia 4500
008 220217s9999 xx 000 0 und d
245 0 _aSpecification for Potassium metabisulphite photographic grade
260 _aLondon
260 _c1960
_bBritish Standards Institution
490 _aBritish Standards
500 _aStandard number: BS 3306
650 _achemicals-Potassium metabisulphite
942 _cST
999 _c73055
_d73055