000 00327nam a2200133Ia 4500
040 _cPK-LaCSN
082 _bDHI
_a500
245 4 _aThe ultimate book of knowledge earth
260 _bDhingra Publishing
_aNew Delhi
_c2013
300 _a40
942 _2ddc
_cBK
999 _c245287
_d245287