Cover Title
p. 0
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The Observer : An Instrument of Precision
Maxfield, Francis N. pp. 205-218
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The Alimentary Tract of the Common Bumblebee
Swingle, Millard C. pp. 219-231
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Fusarium Moniliforme in Relation to Diseases of Corn
Limber, D. P. pp. 232-248
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Principles of Plant Taxonom, IV.
Schaffner, John H. pp. 249-262
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Back Matter
p. 999
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