Smith, W. John. — The behavior of communicating. An ethological approach.

Cambridge, MA: Harvard University Press, 1977; ix+545pp., index, bibliogr., ills, graphs, tables, 8vo, paper. Excellent copy. ¶ l from classical motivational states of displaying animals via 'messages' and their forms to the evolution of display behaviour and, in the end, 'formalized interactions', human ones included.