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100 _aMehrotra, B.N.
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245 _aNew course science and technology :
_cby B.N. Mehrotra [and] Nancy Sehgal
_bstrictly accrding to the latest syllabus prepared by the N.C.E.R.T, New Delhi /
260 _aNew Delhi
_bArya Publications
_c2002
270 _a30, Naiwala, karol Bagh
_bNew Delhi
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300 _a187p. :
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650 _aScience
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650 _aTechnology
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700 _aSehgal, Nancy
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