Macdougall, E. B., & Ettinghausen, R. (1976). Dumbarton Oaks Colloquium on the history of landscape architecture. Dumbarton Oaks.
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Chicago-čujuhus (17. p.)
Macdougall, Elisabeth B., juo Richard Ettinghausen. Dumbarton Oaks Colloquium on the History of Landscape Architecture. Washington, D.C: Dumbarton Oaks, 1976.
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MLA-čujuhus (9. p.)
Macdougall, Elisabeth B., juo Richard Ettinghausen. Dumbarton Oaks Colloquium on the History of Landscape Architecture. Dumbarton Oaks, 1976.
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