Hendricks, Gay <br/><br/>
The centering book :  awareness activities for children, parents, and teachers / 
Gay Hendricks, Russel Wills 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1975 
 - 178 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>0131221922 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education of children<br/>Education--Experimental methods<br/>Physical education and training