Harrop, A <br/><br/>
Further reappraisal of momentary time sampling and partial-interval recording.  [electronic resource] 

 -  Journal of applied behavior analysis  1993 
 - 277-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0021-8855 
<br/><br/><label>Standard No.: </label>10.1901/jaba.1993.26-277  doi