Benson, William S. <br/><br/>
The merchant marine  "a necessity in time of war, a source of independence and strength in time of peace" 
by William S. Benson. 
 - New York  Macmillan  1923. 
 - x, 183 p. 
<br/><br/> Includes indexes. 
<br/><br/><label>LCCN: </label>23008602  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Merchant marine--History.--United States