Assessment of manganese nodule resources  the data and the methodologies 
United Nations, Ocean Economics and Technology Branch 
 - London  Graham & Trotman  1982 
 - ix, 79p.  ill. ;  22cm 
 - Seabed minerals series  v. 1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine mineral resources<br/>Manganese nodules
<br/><br/><label>Dewey Class. No.: </label>333.8  / 5