Bradley, Jack I. <br/><br/>
Basic statistical concepts :  a self-instructional text / 
Jack I. Bradley, James N.McClelland. 
 - Glenview, Ill :  Scott, Foresman,  1978. 
 - 168 p. ;  23 cm. 
<br/><br/> Open access. 
<br/><br/><label>LCCN: </label>77021827  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics--Programmed instruction.