Front Matter
p. 0
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Geographic Variation in Eastern North American Savannah Sparrows (Passerculus sandwichensis)
Aldrich, John W. pp. 1-8
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Book Notices
p. 8
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A Study of the Effects of Increased Iodine Feeding to a Herd of Sixty Dairy Cows
Meyer, Jerome H.; Matthews, Norman L.; Curtis, George M. pp. 9-24
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Book Notices
p. 24
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The Structure and Thickness of the Clinton and Berea Formations in the Vicinity of Wooster, Ohio
Ver Steeg, Karl pp. 25-30
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Five Mucrotrichaphis Aphids
Knowlton, George F.; Allen, Merlin W. pp. 31-35
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Book Notices
p. 35
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A New Acmaeodera from the Southwest (Coleoptera: Buprestidae)
Knull, Josef N. p. 36
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Factors Which Affect the Growth of a Colorless Flagellate, Astasia Klebsii, in Pure Cultures
Dach, Herman Von pp. 37-48
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Three New Species of Psyllidae with Notes on Others
Caldwell, John S. p. 49
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Book Notices
p. 50
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Book Notices
pp. 51-52
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Back Matter
p. 999
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