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1by Elrod, J. McRee, 1932-2016Subjects: “…Classification, Dewey decimal -- Programmed instruction.…”
Published 1980
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2by Batty, C. D.Subjects: “…Classification, Dewey decimal -- Programmed instruction.…”
Published 1992
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3by Batty, C. D.Subjects: “…Classification, Dewey decimal -- Programmed instruction.…”
Published 1981
Book