Purves, Frederick and others <br/><br/>
The focal encyclopedia of photography 

 - London  The focal press  1960 
 - Various pages  V.2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia<br/>Photography-encyclopedia
<br/><br/><label>Dewey Class. No.: </label>770.3  / PUR