Development of tourism in the Commonwealth of Puerto Rico 
prepared for Economic Development Administration, Commonwealth of Puerto Rico ; by Keith E. Duke. 
 - South Pasadena, Calif.  Stanford Research Institute  1968. 
 - 7 v.  ill.  28 cm. 
<br/><br/> Vol. 2-7 by K.E. Duke et al.  "SRI project no. I-6466."  Report of research study conducted by Stanford Research Institute. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tourist trade--Puerto Rico.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Economic conditions.<br/>Puerto Rico