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1Llibreper Esland, Geoff“…Open University (Great Britain). School and Society Course Team…”
Publicat 1971
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2Llibreper Dale, Roger“…Open University (Great Britain). School and Society Course Team…”
Publicat 1972
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3Llibreper Esland, Geoff“…Open University (Great Britain). School and Society Course Team…”
Publicat 1972