Cochran, William Gemmel. <br/><br/>
Planning and analysis of observational studies 

 - New York :  Wiley,  1983 
 - 145 p 
 - Wiley series in probability and mathematical statistics .
 - Wiley series in probability and mathematical statistics .
<br/><br/> D43-26 
<br/><br/><label>LCCN: </label>1752 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Análisis de varianza.<br/>Diseños experimentales.
<br/><br/><label>Dewey Class. No.: </label>519.92  / C61