Permanance and durability of library catalog cards:  a study/ 
Library Technology Project 
 - Chicago:  American Library Association,  c1961 
 - vii, 39 p.;  23 cm. 
 - Library technology project  no. 3 .
<br/><br/> A Study conducted by W.J. Barrow for the Library Technology Project 
<br/><br/>Bibliography: p. 39 
<br/><br/><label>ISBN: </label> $ 1.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Catalog cards--Durabilty<br/>Library catalog management
<br/><br/><label>Dewey Class. No.: </label>676.27