RT Article T1 The paradox of group size in collective action: a theory of the critical Mass. II. JF American sociological review VO 53 IS 1 SP 1 OP 8 A1 Oliver, Pamela E. A2 Marwell, Gerald 1937- LA English YR 1988 UL https://krimdok.uni-tuebingen.de/Record/164088307X K1 Gruppenprozesse K1 Gruppengröße K1 Kollektivhandeln