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Tohutoro APA (7th ed.)
Crowell, K. (1961). THE EFFECTS OF REDUCED COMPETITION IN BIRDS. Proc Natl Acad Sci U S A.
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Tohutoru Kātū Chicago (17th ed.)
Crowell, Kenneth. "THE EFFECTS OF REDUCED COMPETITION IN BIRDS."
Proc Natl Acad Sci U S A 1961.
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Tohutoro MLA (9th ed.)
Crowell, Kenneth. "THE EFFECTS OF REDUCED COMPETITION IN BIRDS."
Proc Natl Acad Sci U S A, 1961.
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