Erickson Bonnie H <br/><br/>
Understanding data 
Erickson Bonnie H; Nosanchuk T A 
 - Milten  The Open University Press        1977 
 - xi, 388p.  cm. 
<br/><br/><label>Standard No.: </label>31782 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B28, L79