A DIRECTORY of theses and dissertations 1965-1983 
/[by] Natural Resources Energy and Science Authority 
 - Colombo  Natural Resources Energy and Science Authority  [n.d.] 
 - 71 p. 
<br/><br/> Includes indexes. 
<br/><br/><label>ISBN: </label>86442 
<br/><br/><label>Dewey Class. No.: </label>16.378  / DIR