Wilson, Thomas D. <br/><br/>
An introduction to chain indexing / 
T.D. Wilson. 
 - [Hamden, Conn.] :  Linnet Books,  [1971] 
 - 85 p. ;  23 cm. 
<br/><br/>Includes bibliographical references ( p. 84) 
<br/><br/><label>ISBN: </label>0208010696 
<br/><br/><label>LCCN: </label>70-022688 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chain indexing--Programmed instruction.
<br/><br/><label>Dewey Class. No.: </label>025.49