Snedecor, George Waddel,   1881- <br/><br/>
Statistical methods applied to experiments in agriculture and biology /   by George W. Snedecor ; with chapter 17 on sampling by William G. Cochran. 

 - 5th ed. 
 - Ames :   Iowa State College Press,   [1956]. 
 - xiii, 534 p. :   il. 
<br/><br/><label>LCCN: </label>56007378  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Métodos estatísticos.<br/>Biologia--Métodos estatísticos.<br/>Estatística.
<br/><br/><label>Dewey Class. No.: </label>519.5