Não informado. (1909). Contributions from the Biological Laboratory of Brown University. Brown University, Biological Laboratory.
Chicago-referens (17:e uppl.)Não informado. Contributions from the Biological Laboratory of Brown University. Providence, RI: Brown University, Biological Laboratory, 1909.
MLA-referens (8:e uppl.)Não informado. Contributions from the Biological Laboratory of Brown University. Brown University, Biological Laboratory, 1909.
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