Walter, H. E. (1947). Biology of the vertebrates: A comparative study of man and his animal allies (Rev. ed.). Macmillan.

Walter, Herbert Eugene. Biology of the Vertebrates: A Comparative Study of Man and His Animal Allies. Rev. ed. [New York]: Macmillan, 1947.

Walter, Herbert Eugene. Biology of the Vertebrates: A Comparative Study of Man and His Animal Allies. Rev. ed. Macmillan, 1947.