Couper, A. D. <br/><br/>
The geography of sea transport / 
A.D. Couper 
 - London :  Hutchinson University Library,  1972 
 - 208 p. :  illus., maps. ;  23 cm. 
<br/><br/><label>ISBN: </label>0091128501 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shipping<br/>Commercial geography