FranksF. L.Institute report on instructional materials development in science for visually handicapped. Unpublished manuscript, American Printing House for the Blind, Louisville, Kentucky, 1970.
2.
FranksF. L., & NolanC. Y.Development of geographical concepts in blind children. Education of the Visually Handicapped, 1970, 2, 1–7.
3.
FranksF. L., & NolanC. Y.Measuring geographical concept attainment in visually handicapped students. Education of the Visually Handicapped, 1971, 3, 11–17.
