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020 _c14
040 _aMAIN
082 _a535VAS.K9
_b5
100 _aD. N. Vasudeva
245 0 _atextbook of light for B. Sc.students.
_cD. N. Vasudeva
250 _aed. Rev ed 7
260 _bAtma Ram
_c1970
942 _cBK
999 _c28480
_d28480