Johnson, B. K.  1896- <br/><br/>
Practical optics for the laboratory and workshop / 
by B. K. Johnson, with a foreword by Cheshire 
 - London :  hatton Press,  1947 
 - 224 p. :  ill. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optics