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Front Matter

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Table of Contents

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Influence of Soil Acidity on the Occurrence of Athiorhodaceae
Eville Gorham and Douglas C. Pratt

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Toward an Energy Policy
Dean E. Abrahamson

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A Floristic Study and Grouse Production in the Mille Lacs Wildlife Area
Michael J. Scanlan

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Fishes of the Yellow Medicine River in Southwestern Minnesota
Carl H. Ernst

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Mouth Brooding Behavior in the Substrate Spawning Cichlid, Tilapia Sparrmani
Hollie L. Collins

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Blood Chemistry Values for Some Fishes of the Upper Mississippi River
Joseph B. Hunn

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Scirpus validus and S. acutus: A Question of Distinctness
Marlyn Miller and E. O. Beal

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A Computer Analysis of Relationships Between Orders of Chrysophyta
David P. Olds

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Deciduous Trees of Minnesota: a Winter Key
Thomas Morley

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Pine Reproduction in Itasca State Park: Analysis in Moisture-Nutrient Coordinates
Vilis Kurmis and Henry L. Hansen

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Size-Structure Correlation in Developing Roots of Cissus and Syngonium
David L. Berquam

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Higher Fungi of Minnesota, ll.
Margaret G. Weaver and Robert L. Shaffer

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An Experimental Introductory Course for Prospective Secondary Science Teachers
Marjorie A. Boeck

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A Computer Simulation Model for Prediction of Voting in the U.N.
Dorothy Dodge

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Handling and Distribution Considerations in World Grain Food Supply
Richard W. Fulmer

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Notice to Contributors of Articles

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Back Matter