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Lua i Stíl Chicago (17ú heag.)Pancaldi, Giuliano. "Darwin's Intellectual Development: (commentary) / Giuliano Pancaldi." The Darwinian Heritage : [incl. Proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985) .
Lua MLA (8ú heag.)Pancaldi, Giuliano. "Darwin's Intellectual Development: (commentary) / Giuliano Pancaldi." The Darwinian Heritage : [incl. Proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985), .