000			00317nam a22001457a 4500
020			_a9788120345324
082			_a621.36 _bKUM
100			_aKumar,P.R. Sasi
245			_aPhotonics:an introduction
260			_aNew Delhi _bPHI _c2012
300			_a210p.
650			_aradiometry
650			_aphotodetectors
942			_cBK
999			_c245461 _d245461