Rosenbaum, Paul R. <br/><br/>
Observational Studies 

 - 2nd ed. 
 - Berlin et al.,  Springer,  2002 
 - 375 pages 
 -  C8 02 
 - Springer Series in Statistics .
<br/><br/><label>ISBN: </label>0-387-98967-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>experimental economics