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1LlibrePublicat 1977“…Association for Programmed Learning and Educational Technology…”
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2LlibrePublicat 1975“…Association for Programmed Learning and Educational Technology…”
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3LlibrePublicat 1976“…Association for Programmed Learning and Educational Technology…”
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4RevistaPublicat 1967“…Association for Programmed Learning and Educational Technology…”
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5Revista“…Association for Programmed Learning and Educational Technology…”
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6LlibrePublicat 1970“…Association for Programmed Learning and Educational Technology…”
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7Actes de congresosPublicat 1969“…Association for Programmed Learning and Educational Technology…”
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8LlibrePublicat 1973“…Association for Programmed Learning and Educational Technology…”
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9RevistaPublicat 1967“…Association for Programmed Learning and Educational Technology…”