McMillan, D E <br/><br/>
Effects of drugs on responding under concurrent fixed-interval schedules and concurrent fixed-ratio schedules.  [electronic resource] 

 -  Behavioural pharmacology  Dec 1999 
 - 765-74 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0955-8810 
<br/><br/><label>Standard No.: </label>10.1097/00008877-199912000-00008  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Central Nervous System Stimulants--pharmacology<br/>Columbidae<br/>Conditioning, Operant--drug effects<br/>Discrimination, Psychological--drug effects<br/>Excitatory Amino Acid Antagonists--pharmacology<br/>Generalization, Stimulus--drug effects<br/>Hypnotics and Sedatives--pharmacology<br/>Male<br/>Methamphetamine--pharmacology<br/>Morphine--pharmacology<br/>Narcotics--pharmacology<br/>Pentobarbital--pharmacology<br/>Phencyclidine--pharmacology<br/>Reinforcement Schedule