por Skutch, Alexander Frank, 1904-2004 [autor] | Elvir, Raul, 1927- [traductor] | Skutch, Alexander Frank, 1904-2004. Life ascending.
por Skutch, Alexander Frank, 1904-2004 [autor] | Skutch, Alexander Frank, 1904-2004. Naturalist on a tropical farm | Elvir Rivera, Raúl [traductor].