Eastman, Samuel Ewer. <br/><br/>
Ships and sugar  an evaluation of Puerto Rican offshore shipping 
by Samuel Ewer Eastman and Daniel Marx, Jr. 
 - Río Piedras, P. R.  University of Puerto Rico Press  1953. 
 - xx, 239 p.  illus., maps. 
<br/><br/> "Final report of the External Transportation Project ... the [University of Puerto Rico] Social Science Research Center." 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>54001405  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shipping--Puerto Rico.<br/>Harbors--Puerto Rico
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Commerce.<br/>Puerto Rico--History--Commerce.651::Puerto Rico.
<br/><br/><label>Dewey Class. No.: </label>387.51