The Insect World; A Reading Book Of Entomology
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Farm Friends And Farm Foes
A Text-Book of Agricultural Science »

Birds In Their Relations To Man; A Manual Of Economic Ornithology For The United States And Canada
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Introduction To Agriculture
Practical Studies In Crop Production »

Ten New England Blossoms And Their Insect Visitors
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A Laboratory Guide For Beginners In Zoology
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Birds in Their Relations to Man
A Manual of Economic Ornithology for the United States and Canada »

Butterflies Worth Knowing
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Our Trees, How to Know Them
Photographs from Nature by Arthur I. Emerson, with a Guide to Their Recognition at Any Season of the Year and Notes on Their Characteristics, Distribution, a... »

Spraying Crops, Why, When, And How
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