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1LivroPublicado em 1977“…Association for Programmed Learning and Educational Technology…”
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2LivroPublicado em 1975“…Association for Programmed Learning and Educational Technology…”
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3LivroPublicado em 1976“…Association for Programmed Learning and Educational Technology…”
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4PeriódicoPublicado em 1967“…Association for Programmed Learning and Educational Technology…”
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5Periódico“…Association for Programmed Learning and Educational Technology…”
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6LivroPublicado em 1970“…Association for Programmed Learning and Educational Technology…”
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7Anais de CongressoPublicado em 1969“…Association for Programmed Learning and Educational Technology…”
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8LivroPublicado em 1973“…Association for Programmed Learning and Educational Technology…”
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9PeriódicoPublicado em 1967“…Association for Programmed Learning and Educational Technology…”