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Iowa City: University, 1938
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JSTOR, 1975
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University of Notre Dame, 1975
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American Bryological and Lichenological Society, 1954
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JSTOR, 1954
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American Bryological Society, 1954
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JSTOR, 1953
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Kansas Academy of Science, 1953
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American Bryological and Lichenological Society, 1951
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JSTOR, 1951
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American Bryological Society, 1951
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Kansas Entomological Society, 1952
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Wiley, 2007