Chambers dequilibre / 
Andre Gardel. 
 - American:  Lausanne,  1956. 
 - 158 pages :  Illustration, photograph  23 cm. 
 - Lettres sciences techniques. .
<br/><br/><br/>In English 
<br/><br/> pbk. 
<br/><br/><label>Dewey Class. No.: </label>153 CHA  1956.