Inmarsat maritime communications handbook issue 4 / 

 - London :  Customer Services Department,  [Date of publication not identified] 
 - various pages :  illustrations, tables, figures ;  30 cm. 
<br/><br/>Includes bibliographic references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inmarsat Maritime--Handbook.
<br/><br/><label>Dewey Class. No.: </label>623.856  / In6