Howard Alvin Crum

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Liverworts and Hornworts of Southern Michigan
Crum, Howard Alvin

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� 64

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Used, First Edition
Focus on Peatlands/Peat Moss CB (GREAT LAKES ENVIRONEMENT)
Crum

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� 20

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Used
The Mosses of Eastern North America 2VSet: In Two Volumes
Crum, Howard; Anderson, Lewis

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� 288.93

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Used