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Volume 97, Number 4 (1990)

Issue cover date: December 1990

Front Matter

Research

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Changes in a Prairie Bird Population From 1940 to 1989
Neil P. Bernstein, Kristine K. Baker, and Sherry R. Wilmot

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Holocene Vegetational Changes in Eastern Iowa
R. G. Baker, C. A. Chumbley, P. M. Witinok, and H. K. Kim

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The Mating Systems and Pollination Biology of Three Species of Verbena (Verbenaceae)
Robert W. Cruden, Kristina K. Baker, Thomas E. Cullinan, Karen A. Disbrow, Kelly L. Douglas, John D. Erb, Kenneth J. Kirsten, Mary L. Malik, Elizabeth A. Turner, Jonathon A. Weier, and Sherry R. Wilmot

Student Research

General Interest Articles

Science Education

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A Summer Course in Invertebrate Developmental Biology at Iowa Lakeside Laboratory: A Unique Experience
Carol W. Schutte, Dale J. Witt, Nicole Y. Janosek, Douglas E. Robinson, Edwin C. Powell, and George G. Brown

Back Matter

JIAS cover art