Joan Welkowitz  <br/><br/>
Introductory statistics for the behavioral sciences/ 
by Joan Welkowitz  
 - 3rd ed. 
 - San Diego:  Harcourt Brace Jovanovich,  1982. 
 - 369p. 
<br/><br/> Joan Welkowitz Robert Ewen Jacob Cohen 
<br/><br/><label>ISBN: </label>9780155459816 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics Behavoural Sciences<br/>Mathematics<br/>Sciences
<br/><br/><label>Dewey Class. No.: </label>519.5  / JOA/I