Callender, Patricia <br/><br/>
Programmed learning  : its development and structure 

 - London  ; Longman  , 1969 
 - xii,120p. 
<br/><br/><label>ISBN: </label> sh 24 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Learning
<br/><br/><label>Dewey Class. No.: </label>370.1523  / CAL