Johnson, Palmer O. <br/><br/>
Statistical methods in research / 
Palmer O.Johnson 
 - New York,  Prentice-Hall,  1949. 
 - xvi, 377 p.  diagrs.  24 cm. 
<br/><br/>Includes "References." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical statistics.<br/>Research.<br/>Probabilities.
<br/><br/><label>Dewey Class. No.: </label>310  / JOS 1968