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Pimm, S. “ECOLOGY: The Eternal Frontier An Ecological History of North America and Its Peoples T. Flannery.” SCIENCE-NEW YORK THEN WASHINGTON-, 2001, 1841–42.

Pimm S. ECOLOGY: The Eternal Frontier An Ecological History of North America and Its Peoples T. Flannery. SCIENCE-NEW YORK THEN WASHINGTON-. 2001;1841–2.

Pimm, S. “ECOLOGY: The Eternal Frontier An Ecological History of North America and Its Peoples T. Flannery.” SCIENCE-NEW YORK THEN WASHINGTON-, AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE, 2001, pp. 1841–42.

Pimm S. ECOLOGY: The Eternal Frontier An Ecological History of North America and Its Peoples T. Flannery. SCIENCE-NEW YORK THEN WASHINGTON-. AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE; 2001;1841–1842.