000 00319 a2200121 4500
008 190208b xxu||||| |||| 00| 0
100 _aGupta, Sunita
245 _aJunior science encyclopedia /
_cSunita Gupta, Ashok Gupta
260 _aNew Delhi
_bPustak Mahal
300 _a221p.
700 _aGupta, Ashok
942 _2ddc
_cBK
999 _c8009
_d8009