Teachers of children who area mentally retarded : a report based on findings from... /
Mackie, Romaine P.
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 .
Educación especial
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 .
Educación especial