Pettersson Hans <br/><br/>
Ocean floor 
Pettersson Hans 
 -  1954 
 - Yale University Mrs. Hepsa Ely Silliman Memorial Lectures .
<br/><br/><label>Standard No.: </label>89,001 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOGRAPHY
<br/><br/><label>Dewey Class. No.: </label>U25, J41