Forbes, Jack D.
Berkeley, Calif. : Far West Laboratory for Educational Research and Development; for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington, [1969]
[Rev. ed.
Forbes, Jack D.
Berkeley, Calif. : Far West Laboratory for Educational Research and Development; Reproduced by U.S. Dept. of Health, Education & Welfare, Office of Education [Educational Resources Information Center], [1967 or 8]
