Rosenbaum, Paul R <br/><br/>
Observational studies / 
Paul R Rosenbaum 
 - Philadelphia :  Springer Verlag,  1995 
 - xiv,375 p. 
<br/><br/><label>ISBN: </label>0387944826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Experimental design<br/>Analysis of variance<br/>Observational studies
<br/><br/><label>Dewey Class. No.: </label>519.53  / O2R6