TY - JOUR A1 - Sherif, M. A1 - Sherif, C. W. T1 - Groups in harmony and tension JF - E. I. Megargee and J. E. Hokanson (Eds.), The dynamics of aggression, New York, et al. (Harper & Row) 1970, pp. 190-211. Y1 - 1970 ER -