Updatable microforms systems    A state of the art survey 

 - Hatfield  NRCD         1972 
 - 22p  cm. 
 - Occasional paper; 2 .
<br/><br/><label>Standard No.: </label>4,997 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>20bM1495, L24