Discussions and Reviews : Paging Arnold Toynbee! - a review Lloyd Ulman (ed.), Challenges to Collective Bargaining Englewood Cliffs, N. J.: Prentice-Hall, 1967. Pp. 180. $4.95. Robert R. Blake, Herbert A. Shepard, and Jane S. Mouton, Managing Intergroup Conflict in Industry Houston, Texas: Gulf Publishing, 1964. Pp. 210. William G. Scott, The Management of Conflict: Appeal Systems in Organizations Homewood, Ill.: Richard D. Irwin, 1965. Pp. 129. $2.95. Myron Lieberman and Michael H. Moskow, Collective Negotiations for Teachers: An Approach to School Administration Chicago: Rand McNally, 1966. Pp. 745. $9.00