Heller, Sara et al <br/><br/>
NBER working paper series preventing youth violence and dropout :  A Randomized field experiment / 
Sara Heller et al 
 - Cambridge  NBER  2013 
 - 81p 
 - NBER Working Paper ;  19014 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NBERWP 19014<br/>E9813.pdf