Darwin and modern science [elektronický zdroj] : essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of the origin of species / edited by A.C. Seward..    Champaign, Ill. : Project Gutenberg, [199-?] . 1 online resource. . ISBN 0585152381 (electronic bk.). ISBN 9780585152387 (electronic bk.)