The four year economic and social development plan of Puerto Rico, 1969-72. 

 -  Puerto Rico Planning Board ,  1968 
 - xiv, 241p. :  ill. ;  27 cm. 
 - USAID 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Planning<br/>Social development<br/>Economic development
<br/><br/><label>Dewey Class. No.: </label>338.9  / PR