Mckelvey, V. E.  <br/><br/>
World Subsea Mineral Resources /   Folleto 
V. E. Mckelvey and Frank F. H. Wang 
 - United States :   Department of the Interior United States Geological Survey,  1969. 
 - 17 p. ;   26 cm. 
<br/><br/> Catalogación preliminar.