Wadsworth, Frank Harold <br/><br/>
The development of the forest land resources of the Luquillo Mountains Puerto Rico 
Frank H. Wadsworth. 
 - Ann Arbor, Mich.  University of Michigan  1949. 
 - xiii, 481 p.  ill. 
<br/><br/> Typescript (photocopy) Ann Arbor, Mich.; University Microfilm International. 
<br/><br/>Thesis (PhD.) -- University of Michigan, 1949. 
<br/><br/>Bibliography : p. [464]-481. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico