Koefoed O <br/><br/>
Geosounding principles,1 

 - Amsterdam  Elsevier Scintific          1979 
 - xiv, 276p.  cm. 
 - Methods in geochemistry and geophysics; 14A .
<br/><br/><label>Standard No.: </label>44748 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>H:(C3), L9