Downie, N. M.,  1910- <br/><br/>
Fundamentals of measurement :  techniques and practices / 
(by) N. M. Downie 
 - 2nd ed. 
 - New York  : Oxford University Press,  1967 
 - 482  p. :  ill. ;  22  cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational tests and measurements