(1) Animal Secrets Told A Book of "Whys" (2) Wild Life in the West Highlands (3) The Sheep and Its Cousins (4) The Marine Mammals in the Anatomical Museum of the University of Edinburgh (5) The Growth of Groups in the Animal Kingdom
P, R. I
Nature (London), 1913-03, Vol.91 (2265), p.80-82 [Periódico revisado por pares]Texto completo disponível