25U 

 BIBLIOGRAPHY 



RELATING TO FOREST CONDITIONS OF ILLINOIS. 



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'59. The Trees and Shrubs in Illinois. Trans. 111. State Agr. 

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'87. Flora Peoriana. Peoria. 



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'88. The Forest-tree Plantation of the University of Illinois. 

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"07. Forestrv for Illinois. Trans. 111. State Hort. Soc, 1907 

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'09. Forest Products of the United States, 1907. Forest Prod- 

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Conrad, Martin. 



'93. Forestry. Rep. 111. Board World's Fair Comm., pp. 311- 

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Cowles, IT. C. 



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'01. The Physiographic Ecology of Chicago and Vicinity; a 

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