Larsen, Egon. <br/><br/>
Lasers work like this / 
Egon Larsen ; ill. by Charles Green. 
 - London :  J. M. Dent,  1969. 
 - 54 p. : ill. 
<br/><br/><label>ISBN: </label>0460064150 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lasers.