Ray, Willam Samuel ,  1917- <br/><br/>
An introduction to experimental design  / 
Samuel Willaim Ray. 
 - NewYork :  Macmillan,  1960 
 - 254 p. ;  ill.,  25 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Experimental design.
<br/><br/><label>Dewey Class. No.: </label>501.8