000 00319nam a2200121 4500
027 _aBS 3162 : 1959
_q1959
041 _aeng
942 _cSD
110 _aBritish Standards Institution
245 _aBS 3162 : 1959 : Ophthalmic trial case lenses
260 _aLondon
_bBritish Standards Institution
500 _aSTD1380
999 _c174486
_d174486