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| Utgitt
| Lexington, Mass. : Lexington Books , c1981
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| Omfang
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| Opplysninger
| "Based on a series of four annual conferences in Aspen, Colorado, from 1976 through 1979, under the sponsorship of the Academy for Educational Development" - Forordet.. - Includes bibliographies and index.
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| Emner
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| ISBN
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