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Volume 108, Number 4 (2001)

Front Matter

Research

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More than a Century of Change in the Ames, Iowa Flora (1859-2000)
William R. Norris, Mark P. Widrlechner, Deborah Q. Lewis, Jimmie D. Thompson, and Richard O. Pope

General Interest Articles

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Invasive Species in Iowa: An Introduction
James J. Dinsmore and Neil P. Bernstein

Back Matter