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The Project Gutenberg eBook of Our National Forests, by Richard H. Douai Boerker.
https://digitalcommons.unl.edu/univstudiespapers/84/
"Ecological Investigations upon the Germination and Early Growth of For" by Richard H. Boerker
Briefly stated the purpose of the present investigation is to inquire into the effect of the more important habitat and seed factors upon the germination and...
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Books by Boerker, Richard H. D. (Richard Hans Douai) - Project Gutenberg
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