000 00286nam a2200121Ia 4500
100 _aSubramaniam PR
245 2 _aTextbook of Light
250 _a2nd
260 _c1968
_bS.Viswanathan
_aMadras
300 _a362
700 _aAnanthakrishnan N,
_aNarayanamurthi M &
_aAchan PK
942 _cBK
999 _c6311
_d6311