Boersma, F.J. <br/><br/>
Eye movements and information processing in mentally retarded children  F.J. Boersma and W. Muir. 

 - Rotterdam  University Press  1975 
 - 85p., 21cm. 
<br/><br/><label>ISBN: </label>90-237-41250. 
<br/><br/><label>Dewey Class. No.: </label>362.38,  / B65E