00593nam a2200205Ia 45000010006000000050017000060070003000230080041000260400025000670410008000920820019001001000022001192450083001412500014002242600054002383000019002926530037003116530016003487000023003642927020240114001126.0ta060624s 197           g     b000 u 465 u  aCotton College,Assam  a465  a910bDo 742 Ev  aDott, Robert H. . 0aEvolution of the Earth /cRobert H. Dott & Roger L. Batten.hTextual Documents  a1st ed. /  aNew York :bMcGraw - Hill book company ,cC 1976.  a504p. ;c25cm.  aGeography-Evolution of the Earth  aG-Geography  aBatten, Roger L. .