Wenzel, Franz  Dr. <br/><br/>
The processing fo agfa negative material/ 
Franz Wenzel 
 - [s.l.]:  [s.n.],  1938 
 - 101 p.;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography--Processing<br/>Photography--Negatives
<br/><br/><label>Dewey Class. No.: </label>770.283