The pictorial cyclopedia of photography/ 
edited by Leonard Gaunt and Paul Petzold; revised by George L. Wakefield 
 - 7th ed. 
 - London:  Focal Press,  1979 
 - 703 p.:  ill., plates;  21 cm. 
<br/><br/><label>ISBN: </label> £ 9.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography--Encyclopedias
<br/><br/><label>Dewey Class. No.: </label>770.3