Não informado. (1883). Contributions from the Biological Laboratories in Princeton University. Princeton University, Biological Laboratories.
Chicago-referens (17:e uppl.)Não informado. Contributions from the Biological Laboratories in Princeton University. Princeton, NJ: Princeton University, Biological Laboratories, 1883.
MLA-referens (8:e uppl.)Não informado. Contributions from the Biological Laboratories in Princeton University. Princeton University, Biological Laboratories, 1883.
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