Young, A.M. <br/><br/>
Selective tolerance to discriminative stimulus effects of morphine or d-amphetamine.  [electronic resource] 

 -  Behavioural pharmacology  Jun 1992 
 - 201-209 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1473-5849