000 00260nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aSubrahmanyam, N.
245 0 _aTextbook of Light
260 _bS. Viswanathan
_aMadras
_c1958
650 _aLight
942 _cBK
999 _c8750
_d8750