A comprehensive agricultural program for Puerto Rico 
by Nathan Koening. 
 - Washington, D.C.  U.S. Govt. Print Off.  1953. 
 - xii, 299 p.  illus., maps. 
<br/><br/>Bibliography : p. 287-290. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Puerto Rico.<br/>Agriculture--Economic aspects--Puerto Rico.