Ellstad, Myrvin H. <br/><br/>
Stress, testing: principles and practice  Myrvin H. Ellstad. 

 - New Delhi  J.P. Brothers  1988 
 - xxviii, 526p., ill. 22cm. 
<br/><br/><label>Dewey Class. No.: </label>616.12075,  / E45S