1872 – The expression of the emotions in man and animals (Darwin, Charles) julio 12, 1872 por Mario Modesto Mata
1872 – The expression of the emotions in man and animals (Darwin, Charles) julio 12, 1872 por Mario Modesto Mata
1872 – On the Origin of Species by means of Natural Selection. Or the preservation of favoured races in the struggle for life (Darwin, Charles) julio 12, 1872 por Mario Modesto Mata
