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Dyfyniad Arddull ChicagoPielou, E.C. The Interpretation of Ecological Data: A Primer on Classification and Ordination. New York: Wiley Inter-science, 1984.
Dyfyniad MLAPielou, E.C. The Interpretation of Ecological Data: A Primer on Classification and Ordination. Wiley Inter-science, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.