Não informado. (1970). Forest Research Series. Clemson University, Department of Forestry.
Chicago-referens (17:e uppl.)Não informado. Forest Research Series. Clemson, SC: Clemson University, Department of Forestry, 1970.
MLA-referens (8:e uppl.)Não informado. Forest Research Series. Clemson University, Department of Forestry, 1970.
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