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References
1.
Dunn L. N.
Special education for the mildly retarded—Is much of it justifiable? Exceptional Children , 1968 , 35 , 5 –21 .
2.President's Committee on Mental Retardation. The six hour retarded child . Washington, D.C. : USGPO , 1970 .
3.
Siegel E.
Special education in the regular classroom . New York : The John Day Co. , 1969 .
4.
Spence J. T.
,
Underwood B. J.
,
Duncan C. P.
, &
Cotton J. W.
Elementary statistics . New York : Appleton-Century-Crofts , 1969 .
