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037 _aTextBook
040 _aFEDL
_beng
_cFEDL
041 _ahin
_2hin
084 _a507, SID
_qFEDL
100 _aSiddiqi M N
245 0 _aPrarumbhik sthar per vigyan shikshan. 2 Part
250 _a2 rev
260 _aNew Delhi, India
_bArya Book Depot
_c2002
300 _a154p
365 _aINR
_b40
650 _aScience Education - Teaching
_9762465
700 _a Yadav R A
_9776874
942 _cTB
_h507, SID
999 _c1386334
_d1386334