Croy, Otto R.,  1902- <br/><br/>
Graphic effects by photography / 
Croy, translated by F. Bradley. 
 - London :  Focal Press,  c1973. 
 - 199 p.  illus. (some col.)  22 cm. 
<br/><br/> Translation of Photos helfen zeichnen. 
<br/><br/><label>ISBN: </label>0240508327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography--Special effects.<br/>Advertising--Photographers