Hedges William D. <br/><br/>
Testing and evaluation for the sciences 

 - Belmont  Wadsworth Publishing Company        1966 
<br/><br/><label>Standard No.: </label>90306 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>T2:3(A)-5, K6