Não informado. (1915). The Scientific Monthly. American Association for the Advancement of Science.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. The Scientific Monthly. Washington: American Association for the Advancement of Science, 1915.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. The Scientific Monthly. American Association for the Advancement of Science, 1915.
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