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Volume 62, Annual Issue (1955)

Front Matter

General Interest Articles

Research

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A Note on the Origin of "Blue Rain"
James M. Vinje and Mary M. Vinje

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Notes on Iowa Rusts
John W. Baxter

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Photoperiodism in Oats
S. C. Wiggans and K. J. Frey

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The Genus Asclepias in Iowa
Dan Nicolson and Norman H. Russell

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Reactivity of the Halogen in the Isomeric 4- and 4'-Chloroazoxybenzenes
John J. Courtney, Lothar E. Geipel, and R. L. Shriner

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Studies on the Hydrolysis of Acetyl-1-C14-Salicylic Acid
J. I. Routh, R. W. Knouse, and W. D. Paul

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Fine Sands in East-Central Iowa
A. E. Wickstrom, K. A. Riggs Jr., and D. T. Davidson

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Coal Spoil-Bank Materials as a Medium for Plant Growth
Dean W. Einspahr, A. L. McComb, F. F. Riecken, and W. D. Shrader

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A Drumlinoid Hill, Story County, Iowa
L. A. Thomas, K. M. Hussey, and C. J. Roy

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A New Outcrop of the Rockville Conglomerate
Sherwood D. Tuttle and Richard C. Northup

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The Relationship Between ''Achievement Imagery" and Stuttering Behavior in College Males
Leonard D. Goodstein, John G. Martire, and Charles D. Spielberger

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The Generality of Level of Aspiration in Three Areas of Endeavor
Mary Catherine Hampton and Charles F. Haner

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A Re-Evaluation of the Auditory "Dead Time Constant"
Charles D. Parker and Earl D. Schubert

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Fishes of Little Wall Lake, Iowa Prior to Dredging
Kenneth D. Carlander and George Sprugel Jr.

Back Matter