The phytometer method in ecology; the plant and community as instruments ( ) Author Frederic E. (Frederic Edward) Clements Title The phytometer method...
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https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English determination method or standard: SHA-1...
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Mark 1.0falsefalse English applies to jurisdiction: United States of America determination method: work of the federal government of the United States...
June-Oct. 1936 unnumbered Compiled by the library staff of the Soil Conservation Service from publications received in the United States Department of Agriculture...