00835nam a22002897i 4500 20141212092958.0 890301s1989 sp gr 000 0 spa c 1944-7558 eng ACTON, H.M. INTERACTION AND PERFORMANCE WITHIN COOPERATIVE GROUPS: EFFECTS ON NONHANDICAPPED STUDENTS' ATTITUDES TOWARD THEIR MILDLY MENTALLY RETARDED PEERS Compañeros Discapacidad Discapacidad intelectual Inclusión educativa Socialización Discapacidad Documental ZARBATANY, L. AMERICAN JOURNAL ON MENTAL RETARDATION Vol. 93, no. 1 (1988), p. 16-23 11.1 73 C9 AR 19890301 R.100 Depósito (3) AR