Technological and social factors in long term fluctuations : Edited by Massimo Di Matteo, Richard M. Goodwin and Alessandro Vercelli (Proceedings of a Conference held in Siena, Italy, December 1986), Lecture Notes in Economics and Mathematical Systems, Vol. 321 (New York: Springer Verlag, 1989. Pp. ix + 442. DM82 paperback. ISBN 3 540 50663 2)