Hayes, Thomas S. <br/><br/>
What kind of library service for Puerto Rico's 2,000 000 Americans? / Thomas S. Hayes and Gonzalo Velázquez. 

 - v. 
<br/><br/> In Library Journal. Publication for the year, 1948. New York, March 1, 1948. vol. 73-no. 5. p. 368-372. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Libraries--Puerto Rico.<br/>Puerto Rico