Front Matter
p. 0
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Crop Ecology and the Primary Vegetational Survey
Waller, Adolph E. pp. 1-10
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A Review of the Genus Eristalis Latreille in North America
Hull, Frank M. pp. 11-45
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Four Undescribed Species of Waterstriders (Hemip.-Gerridae)
Drake, Carl J.; Hottes, F. C. pp. 46-50
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Back Matter
p. 999
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