Twelfth annual report of the federal maritime commission :  fiscal year ended June 30, 1973 / 
United States Federal Maritime Commission 
 - Washington, D.C. :  The Commission,  1973 
 - 83 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology
<br/><br/><label>Dewey Class. No.: </label>600