Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 90 (1983) > Number 4
Volume 90, Number 4 (1983)
Issue cover date: December 1983
Front Matter
General Interest Article
Research
Lithological and Palynological Analyses of a Quaternary Exposure, Waterman Creek, O'Brien County, Iowa p. 125-127
Kent L. Van Zant
Energy Efficiency Ratios of Surface Mining Systems for a Small Iowa Coal Mine p. 128-131
T. S. Colvin, S. J. Marley, and C. E. Anderson
Freshwater Drum Spawning and Fecundity in the Upper Mississippi River p. 132-133
Timothy J. Goeman
A Well-Preserved Ground Sloth (Megalonyx) Cranium from Turin, Monona County, Iowa p. 134-140
H. Gregory McDonald and Duane C. Anderson
The Measurement of pO2 by O2 Electrode in the Presence of Changing pCO2 p. 141-143
Ellen M. Lackermann, Ferdinand Kreuzer, G. Edgar Folk Jr., and Hans-Peter Kimmich
Evaluation of Sources of Resistance in Oats to Puccinia coronata by use of Many Fungus Cultures p. 144-146
L. J. Michel and M. D. Simons
Effect of Symptomless Fungal Infection of Maize Seed on Germination in the Presence and Absence of Pythium debaryanum. p. 147-149
D. C. Foley
Associations Among Nitrogen Harvest Index and Other Traits Within Two Avena Species p. 150-153
J. A. Fawcett and K. J. Frey
FOREST RETURNS: An Interactive Computer System for Economic Analysis of Alternative Forest Land Uses p. 154-157
Richard T. Straight and David W. Countryman
Back Matter
Index for Volume 90 p. 164-164
