Polson, D A <br/><br/>
Precurrent contingencies: Behavior reinforced by altering reinforcement probability for other behavior.  [electronic resource] 

 -  Journal of the experimental analysis of behavior  May 1994 
 - 427-39 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-5002 
<br/><br/><label>Standard No.: </label>10.1901/jeab.1994.61-427  doi