000 00372nam a2200157Ia 4500
008 210804s2001||||xx |||||||||||||| ||und||
020 _a9788181470034
041 _aeng
082 _a617.5
_bKHU/TH
100 _aKhurana A K
245 0 _aTheory and practice of optics and refraction
250 _a1st
260 _aNew delhi
_bElsevier
_c2001
300 _a347
942 _cBK
999 _c40
_d40