Langley, Russell. <br/><br/>
Practical statistics for non-mathematical people / 
Russell Langley 
 - London :  Pan Books,  c1968 
 - 399 p. :  ill. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Probabilities.<br/>Statistics.
<br/><br/><label>Dewey Class. No.: </label>519.5  / LAP 1968