Educating children in grades four, five, and six.

Lewis, Gertrude M. (Gertrude Minnie), 1896-1996.
[Washington] : U.S. Dept. of Health, Education, and Welfare, Office of Education, [1958]

Educating children in grades seven and eight.

Lewis, Gertrude M. (Gertrude Minnie), 1896-1996.
[Washington] : U. S. Dept. of Health, Education, and Welfare, Office of Education, [1954]

Educating disadvantaged children in the middle grades

Mackintosh, Helen K. (Helen Katherine), 1897-1980.
[Washington] : U.S. Office of Education, [1965]

Educating disadvantaged children in the primary years; kindergarten through grade 3

Mackintosh, Helen K. (Helen Katherine), 1897-1980.
[Washington] : U.S. Office of Education, [1965]

Educating the more able children in grades four, five, and six.

Lewis, Gertrude M. (Gertrude Minnie), 1896-1996.
[Place of publication not identified] : U.S. Dept. of Health, Education, and Welfare, Office of Education, [1961]