Manual for use by the maritime mobile and maritime mobile-satellite services / 
International Telecommunications Union. 
 - Geneva :  International Telecommunication Union,  1992. 
 - various paging ;  21 cm. +  pbk. 
<br/><br/><label>ISBN: </label>9261044514 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.<br/>Aids to navigation.<br/>Shipping
<br/><br/><label>Dewey Class. No.: </label>623.856