How it works :  the illustrated encyclopedia of science and technology / 
Edited by Ralph Hancock...[et al.]. 
 - New york :  Marshall Cavendish,  c 1977. 
 - Vols. :  ill. ;  28 cm. 
<br/><br/>V. 8- (Fibre optics gauss)  ; 
<br/><br/>333  333 
<br/><br/><label>ISBN: </label>0 85685 2104  0 85685 218 x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia--Technology. 
<br/><br/><label>Dewey Class. No.: </label>503 / I6