000 00393cam a2200169 4500
020 _a0407140018
050 1 0 _aMED RE952
_bB5
100 1 _aBier, Norman.
245 1 0 _aCorrection of subnormal vision
250 _a2nd ed.
260 _aLondon
_bButterworths
_c1970
300 _aviii, 287 p.
_bill;
650 0 _aEyeglasses
650 0 _aVision disorders
650 2 _aLenses
942 _cBK
999 _c12715
_d12715