Man on the landscape; the fundamentals of plant conservation Carter, Vernon Gill, 1907-1989 creator text book Washington National Wildlife Federation 1949 1949
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ENG Plant ecology Soil conservation S623 .C28 631.45 https://www.biodiversitylibrary.org/bibliography/29299 1048813 agr49000086 10.5962/bhl.title.29299 U.S. Dept of Agr. Libr.