Hay, Richard L.  1926- <br/><br/>
Geology of the Olduvai Gorge :  a study of sedimentation in a semiarid basin / 
Richard L. Hay. 
 - Berkeley :  University of California Press,  c1976. 
 - xvi, 203 p., [14] leaves of plates (6 fold.) :  ill. ;  28 cm. 
<br/><br/>Bibliography: p. 198-200. and index. 
<br/><br/><label>ISBN: </label>0520029631 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Tanzania--Olduvai Gorge.
<br/><br/><label>Dewey Class. No.: </label>556.7826  / HAG 1976