Ray, Sidney F. <br/><br/>
The lens in action / 
by Sidney F. Ray. 
 - New York :  Hastings house,  c1976. 
 - 201 p. :  ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lenses, photographic.<br/>Photography--Apparatus and supplies.
<br/><br/><label>LC Class. No.: </label>TR270  / .R39