000 00311 a2200133 4500
080 _a525
_bC 454 O
245 1 _aOur earth and the universe
_cby B. Chand
260 _aBombay
_bAsia Publishing House
_c1962
650 _aEarth
650 _aUniverse
100 1 _aChand, B.
_d
300 _a94 p.
901 _a86252
999 _c25597
_d25597