000 00312nam a2200133Ia 4500
008 200512s9999 xx 000 0 und d
082 _a617.5
100 _aAk khurana
245 0 _aTheory and practice of optics and refraction
250 _a2
260 _bElsevier
_c-
440 _v_
650 _aophthalmology
999 _c53903
_d53903