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008 230401s9999 xx 000 0 hin d
041 _aHindi
044 _aIndia
082 _bSL/I5
100 _aTyagi, Shiv Kumar
245 0 _aRavi Electronics Projects
260 _bRavi Publications
650 _aScience
942 _2ddc
_cSL
999 _c240
_d240