Snedecor, George Waddel,  1881- <br/><br/>
Statistical methods / 
[by] George W. Snedecor [and] William G. Co chran. 
 - Ames, Iowa :  Iowa State University Press,  [1937]. 
 - xvi, 485 p. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.
<br/><br/><label>Dewey Class. No.: </label>519