Não informado. (2022). US Forest Service Resource Bulletin NC. North Central Forest Experiment Station.
Citace podle Chicago (17th ed.)Não informado. US Forest Service Resource Bulletin NC. Saint Paul, Minn: North Central Forest Experiment Station, 2022.
Citace podle MLA (8th ed.)Não informado. US Forest Service Resource Bulletin NC. North Central Forest Experiment Station, 2022.
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