Witherby <br/><br/>
Passage planning guide. English Channel and Dover Strait / Witherby. 

 - 2nd ed. 
 -  Livingston : Witherby Publishing Group  2011 
 - 267p. : ill. ( some col. ) 30cm. 
<br/><br/><label>ISBN: </label>9781856094221 
<br/><br/><label>LC Class. No.: </label>VK545 .W774 2011 
<br/><br/><label>Dewey Class. No.: </label>VK545 .W774 2011 
<br/><br/><label>National Library of Medicine Call No.: </label>VK545 .W774 2011