Long, S H. <br/><br/>
Navigational wireless / 

 - London :  Chapman and Hall,  1927. 
 - xi, 164 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maritime Navigation<br/>Radio Waves<br/>Marine Communication
<br/><br/><label>Dewey Class. No.: </label>621.384  / LON