Lenk, John D. <br/><br/>
Electronic navigation  made easy 

 - New York  John F. Rider publisher  1964 
 - viii, 167p.  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigation<br/>Electronic Engineering
<br/><br/><label>Dewey Class. No.: </label>621.384  / LEN