Zanelli, Leo. <br/><br/>
Teach yourself underwater swimming / 
[by] Leo Zanelli. 
 - London :  English Universities Press,  1967. 
 - x, 181 p. :  ill. ;  19 cm. 
 - The teach yourself books .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [172]-174. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Skin diving--Handbooks, manuals, etc.<br/>Scuba apparatus.