Heckman, James <br/><br/>
Characterizing selection bias using experimental data 

 - Cambridge, Mass. :  National Bureau of Econimic Research,  1998 
 - 61 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATCHING THEORY<br/>PARAMTER ESTIMATION<br/>EXPERIMENTAL DESIGN<br/>ECONOMETRIC DESIGN
<br/><br/><label>LC Class. No.: </label>QA164  / C427