| 1 |
Group IV. Working with nature
The care of trees in lawn, street and park : with a list of trees and shrubs for decorative use / by Bernhard E. Fernow
New York : Henry Holt , 1910
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| 2 |
group 1 . Classification of nature
Fishes / by David Starr Jordan
New York : H. Holt , 1907
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| 3 |
group 1. Natural history
American insects / by Vernon L. Kellogg ; with many original illustrations by Mary Wellman
3rd ed., rev. - New York : H. Holt , 1914
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| 4 |
Group 4 . Working with nature
Insects and disease : a popular account of the way in which insects may spread or cause some of our common diseases / by Rennie W. Doane
New York : Henry Holt , 1910
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