Investigation of the exposure of Diazo Duplicate Negativews by W J Barreett 

 - Hatfield  NRCD         1971 
 - 20p  cm. 
<br/><br/><label>Standard No.: </label>4,991 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>20bM1495, L11