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1BokPublicerad 1977“…Association for Programmed Learning and Educational Technology…”
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2BokPublicerad 1975“…Association for Programmed Learning and Educational Technology…”
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3BokPublicerad 1976“…Association for Programmed Learning and Educational Technology…”
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4TidskriftPublicerad 1967“…Association for Programmed Learning and Educational Technology…”
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5Tidskrift
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6BokPublicerad 1970“…Association for Programmed Learning and Educational Technology…”
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7KonferenspublikationPublicerad 1969“…Association for Programmed Learning and Educational Technology…”
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8BokPublicerad 1973“…Association for Programmed Learning and Educational Technology…”
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9TidskriftPublicerad 1967“…Association for Programmed Learning and Educational Technology…”