Book Reviews
Abstract
Howard, Ronald, Dynamic Probabilistic Systems, Volume I: Markov Models; Volume II: Semi-Markov Models. New York: John Wiley & Sons, Inc., 1971, Vol. I: 585 pp., $22.00; Vol. II: 547 pp., $24.25—reviewed by Marshall Freimer
Wheelright, Steven C. and Makridakis, Spyros, Forecasting Methods for Management. New York: John Wiley & Sons, Inc., 1973, 241 pp., $13.95—reviewed by M. J. McR

