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3 Citations
Bibliography: p. 140-158. Thesis (Ph. D.)--University of Michigan. Microfilm.
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5 Reads
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3 Citations
Bibliography: p. 140-158. Thesis (Ph. D.)--University of Michigan. Microfilm.
... THE SCREECH OWL: LIFE HISTORY AND POPULATION ECOLOGY IN NORTHERN OHIO 5 From the beginning of settlement in the Black Swamp (circa 1820), the entire agricultural system revolved around corn. Most of the conversion to agricultural land in northwestern Ohio took place after 1850 and continued until the turn of the century (Kaatz 1953). Within a few decades, the Swamp was transformed into one of the most productive agricultural regions in Ohio. ...