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Filters: Author is Coburn, Helen R. [Clear All Filters]
An ecological study of Bryant's Bog, Cheboygan County, Michigan. Papers of the Michigan Academy of Science, Arts and Letters. 17:57-65.. 1933.
The effect of increased activities and change in mode of transportation upon the distribution of introduced species in the vicinity of Douglas Lake, Michigan. Bulletin of the Torrey Botanical Club. 57:339-346.. 1931.