Volume 109, Number 3-4 (2002)

Issue cover date: September-December 2002

Front Matter

General Interest Article



The Unionid Mussels of the Upper Iowa and Turkey River Watersheds p. 43-49
Jim Eckblad, Brett Ostby, and Karis Tenneson


Soybean Canopy Gap Influence on Velvetleaf Seed Production p. 50-52
Shawn R. Wright, Micheal D. K. Owen, and Douglas D. Buhler

Science Education


Science Safety Status in Iowa Schools p. 61-65
Gerlovich A. Jack, Rahul Parsa, Bruce Frana, and Theresa Stiner

Back Matter