books.google.com - When animals, including humans, communicate, they convey information and express their perceptions of the world. Because different organisms are able to produce and perceive different signals, the animal world contains a diversity of communication systems. Based on the approach laid out in the 1950s...http://books.google.com/books/about/The_Design_of_Animal_Communication.html?id=caf8iat1C7sC&utm_source=gb-gplus-shareThe Design of Animal Communication