000 00260nam a2200121Ia 4500
008 151205s9999||||xx |||||||||||||| ||und||
020 _c0
100 _aMATHUR,B.K.
245 _aPRINCIPLE OF OPTICS
260 _bNEW GOPAL
650 _aOPTICS
942 _cBK
999 _c296025
_d296025