000			00305nam a22001217a 4500
082			_a535 _bCHA/E
100			_aChakrabarti, P K
245			_aGeometrical optics / _cP K Chakrabarti
260			_c1991 _bNew Central Book Agency, _aCalcutta :
300			_a145p. : _bill. ;pb
650			_aPhysics
942			_cBK
999			_c20143 _d20143