ArmstrongJ. D. (1977). Mobility aids and the limitations of technological solutions.New Beacon, 61(721), 113–115.
2.
KoestlerF. (1977). The unseen minority.New York: David McKay Co.
3.
National Society to Prevent Blindness (NSPB). (1980). Vision problems in the U.S.New York: Author.
4.
Office of Technology Assessment (OTA). (1982). Technology and handicapped people.Washington, DC: Author.
5.
PerlmanL. G., & AustinG. F. (Eds.). (1984). Technology and rehabilitation of disabled persons in the information age.Washington, DC: Mary E. Switzer Memorial Seminar.
6.
RussellL. (1964, Aug. 3–7). Travelpath sounder.Rotterdam: Proceedings of the Mobility Research Conference, 73–78.
7.
UslanM.M. (1983). Provision of O&M services in 1990.Journal of Visual Impairment & Blindness, 77, 213–215.
8.
UslanM. M., PeckA. F., & KirchnerC. (1981). Demand for orientation and mobility specialists in 1980.Journal of Visual Impairment & Blindness, 75, 8–12.