Principles of Dynamics. Donald T. Greenwood. Prentice-Hall, Englewood Cliffs, N.J., 1965. x + 518 pp. Illus. $14
E. E. Zajac 1
1 Bell Telephone Laboratories, Murray Hill, New Jersey
In my review of Principles of Dynamics, by Donald T. Greenwood [Science 148, 810 (1965)], I cited errors in Problem 5-9 and Eqs. (8-308). The author has shown me that he is in fact correct in both instances.