Johnson, B.K. <br/><br/>
Optics and Optical Instruments:  An Introduction with Special Reference to Practical Applications / 
B.K. Johnson. 
 - New York :  Dover Publications, Inc.1,  1960. 
 - 244 p. 
 - 535+681.4 .
<br/><br/>Index: p. 222-224 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optics<br/>Optical instruments
<br/><br/><label>Dewey Class. No.: </label>535+681.4