Principles of zoology : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct; with numerous illustrations … Pt.1 , Comparative physiology. / by Louis A. Agassiz and Augustus A. Gould August 25, 2012 by tragbarerfernseher10 0 Principles of zoology : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct; with numerous illustrations … Pt.1 , Comparative physiology. / by Louis A. Agassiz and Augustus A. Gould