Pettersson, Hans,  1888- <br/><br/>
The ocean floor / 
Hans Pettersson. 
 - New York:  Hafner Publishing Company,  1969. 
 - xv, 181 p. :  illus. ;  22 cm. 
 - Mrs. Hepsa Ely Silliman memorial lectures. .
<br/><br/> Facsim. reprint of the ed. published by Yale University Press, New Haven, in series: Yale University. Mrs. Hepsa Ely Silliman memorial lectures. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>78-098102 //r85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ocean bottom.