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Front Matter

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The Next Step In The Junior Academy Movement
W. C. Croxton

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Minnesota Lake Surveys And Fish Management
Samuel Eddy

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The Effect Of Environmental Factors Upon The Growth Rates Of Minnesota Fishes
Samuel Eddy and Kenneth D. Carlander

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Experimental Simulation of Winter Anaerobiosis
Raymond L. Lindeman

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Regional Plankton Studies In Minnesota
Charles B. Reif

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Noteworthy Plants From The Duluth Area
Olga Lakela

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Longevity Of Red Pine Seed
Eugene I. Roe

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When Are Pine Cones Ripe?
Paul O. Rudolf

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Further Studies On Prosthogonimus Macrorchis, Oviduct Fluke Of Poultry, With Special Reference To The Effect On Egg Production In The Ring-Necked Pheasant
Ralph W. Macy

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Deer Inventory Studies In Minnesota
Gordon Fredine

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Applications Of Artificial Radioactivity To Problems In Chemistry
D. E. Hull

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The Biological Use Of The Stable Mass Isotopes
Allan Hemingway

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Characteristics Of Spectrographic Plates In The Ultra Violet Region Between 2300-2000A
R. G. Beck, L. Lundberg, and Elmer S. Miller

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Threshold Values For The Perception Of The Direction Of Frequency Modulation
Abe Pepinsky

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The Measurement Of The Effectiveness Of Laboratory Procedures Upon The Achievement Of Students In Zoology With Particular Reference To The Use And Value Of Detailed Drawings
Palmer O. Johnson

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Abstract Papers

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A Preliminary Survey Of Science Clubs In Minnesota
Lewis L. Barett

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Back Matter