Olson, Willard Clifford <br/><br/>
The measurement of nervous habits in normal children / 
Willard Clifford Olson 
 - Minneapolis :  The University of Minnesota Press,  [1929] 
 - xii, 97 p. :  table., diagr. ;  20 cm. 
 - University of Minnesota. the institute of child welfare. monograph ;  111 .
<br/><br/> "References upon which the inventory of ties is based" : p. 9-10 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>148