Kelleher, R T <br/><br/>
Conditioned reinforcement in second-order schedules.  [electronic resource] 

 -  Journal of the experimental analysis of behavior  Sep 1966 
 - 475-85 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-5002 
<br/><br/><label>Standard No.: </label>10.1901/jeab.1966.9-475  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Birds<br/>Conditioning, Psychological<br/>Reinforcement Schedule<br/>Reinforcement, Psychology