Johnson <br/><br/>
The Practical Zone System  2nd. Ed. 
Chris Johnson 
 - [2nd. Edition] 
 - Boston, USA  Focal Press  1994 
 - xi, 164p.  ill.  25 cm 
<br/><br/><label>ISBN: </label>0240801784 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography<br/>Zone System