"Lorus and Margery Milne, the well-known biologists and nature writers, here, out of the richness of their knowledge, picture the wonderful interrelationship of all life - the dynamic equilibrium between differend kinds of animals and their environment. The world of nature is constantly filled with drama, much of it invisible to ordinary eyes, but vivid and sometimes even lurid to the eyes of such suberbly trained observers. In this unusual book the Milnes disclose the fierce impact of man upon animal life and of animals upon one another and upon the plant life of the earth.it is no simple story, for the balance of the earths creatures is delicate, complex and multiple. A change affecting one species may ultimately affect another species with which it has no direct or obvious contact." Very good condition, Please see pictures for full description. A1