TY  - BOOK
AU  - Mackie,Romaine P.
AU  - Williams,Harold M.
AU  - Dum,Lloyd M.
AU  - Engel,Anna M.
TI  - Teachers of children who area mentally retarded: a report based on findings from... 
AV  - LC4661 M3.8
PY  - 1960///
CY  - Washington
PB  - Department of Health, Education and Welfare
KW  - Educación especial
ER  -