Hanson, Earl Parker,  1899- <br/><br/>
Puerto Rico, ally for progress / 
Earl Parker Hanson. 
 - Princeton, N.J. :  Van Nostrand,  [1962] 
 - 136 p.  illus. 
 - Van Nostrand searchlight book,  no. 7 .
<br/><br/>Includes bibliography. 
<br/><br/><label>LCCN: </label>62053267  
<br/><br/><label>Nat. Bib. No.: </label>GB63-2048 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--History.<br/>Puerto Rico--Economic conditions.
<br/><br/><label>LC Class. No.: </label>117 F 1958  / H251p 1962