Little, E. L. (1979). Forest trees of the United States and Canada: And how to identify them. Dover.
Chicago-čujuhus (17. p.)Little, Elbert Luther. Forest Trees of the United States and Canada: And How to Identify Them. Nueva York: Dover, 1979.
MLA-čujuhus (9. p.)Little, Elbert Luther. Forest Trees of the United States and Canada: And How to Identify Them. Dover, 1979.
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