Six special studies requested for the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. 

 - Washington  U.S. Govt. Print. Off.  1971. 
 - iii, 130 p.  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suffrage--Puerto Rico.<br/>Presidents--Election.--United States
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Foreign economic relations--United States.<br/>United States--Foreign economic relations--Puerto Rico.