Not for Sale
Product of a butterfly farm near Wewak, Papua New Guinea. Bird-wing butterflies are grown on vegetation planted by a farmer on steep slopes near his village. Photo courtesy of Noel D.Vietmeyer.
The National Academies of Sciences, Engineering, and Medicine 500 Fifth St. N.W. | Washington, D.C. 20001
Wilson, E.O. "Part 6: How is Biodiversity Monitored and Protected?."
Washington, DC: The National Academies Press, 1988.
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