Mackie, Romaine P. <br/><br/>
Teachers of children who area mentally retarded :  a report based on findings from... / 
by Romaine P. Mackie, Harold M. Williams and Lloyd M. Dum ; colab. Anna M. Engel ... [et al.]. 
 - Washington :  Department of Health, Education and Welfare,  1960. 
 - 97 p. :  il. 
 - Bulletin 1957 ;  3 .
<br/><br/><label>Encabezamiento--Tema: </label><br/>Educación especial