Elementary statistics 
[by] Janet T. Spence [and others]. 
 - 2 . ed. 
 - New York  Appleton-Century-Crofts  [1968] 
 - ix, 245 p :.  illus. 
 - The Century Psychology Series .
<br/><br/> First ed. by B. J. Underwood and others. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>68013432 //r883 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Statistical methods.<br/>Psychometrics
<br/><br/><label>LC Class. No.: </label>HA29  / .E43 1968 
<br/><br/><label>Dewey Class. No.: </label>519.5/02415