Ewel, John J. <br/><br/>
Las zonas de vida de Puerto Rico y las Islas Virgenes Americanas  una sinopsis 
= Ecological life zones of Puerto Rico and the U.S. Virgin Islands. 
por John J. Ewel y Jacob L. Whitmore. 

 - Rio Piedras, P.R.  Institute of Tropical Forestry  1973. 
 - 9 p.  ill., fold. col. maps. 
 - Boletín de Investigación del Servicio Forestal ITF ; 18A .
<br/><br/> Translation of the ecological life zones of Puerto Rico and the U.S. Virgin Islands. 
<br/><br/>Bibliography : p. 9. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Puerto Rico.<br/>Ecology--Virgin Islands of the United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico
<br/><br/><label>National Agricultural Library Call No.: </label>A99.9  / F7637 No.18A