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040 _aMAIN
041 _aEnglish
082 _a160
100 _aKAUL, B.N
245 0 _aElements of Scientific Methods
_bElements of Scientific Methods, Delhi : Sultan Chand, 1969
_cB.N KAUL
260 _c1969
_bSultan Chand
_aDelhi
942 _cBK
999 _c6082
_d6082