O'Brien, R M <br/><br/>
Contingency factors in negative practice of smoking.  [electronic resource] 

 -  Psychological reports  Apr 1977 
 - 495-505 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0033-2941 
<br/><br/><label>Standard No.: </label>10.2466/pr0.1977.40.2.495  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Behavior Therapy--methods<br/>Female<br/>Humans<br/>Male<br/>Middle Aged<br/>Smoking Prevention