Croy, O.R. <br/><br/>
The Retina way:  the retina photographer's campanion/ 
O.R. Croy 
 - 7th ed. 
 - London:  Focal Press,  1957 
 - 303 p.:  ill.;  20 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 50.40 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography<br/>Photography--Exoposure<br/>Photography--Lighting<br/>Color photography
<br/><br/><label>Dewey Class. No.: </label>770.2