Oakley, Kenneth P. The succession of life through geological time / by Kenneth P. Oakley and Helen M. Muir-Wood - 5th ed. - London : [s.n.], 1962 - vii, 94 p. : ill. ; 22 cm. Includes index ISBN: Rs. 6.00 Subjects--Topical Terms: Geology--PeriodicityBacteria Dewey Class. No.: 560