Colin CROUCH : Trade Unions : The logic of Collective Action. Glasgow, Fontana Paperbacks, 1982, 251 pp., ISBN 0-00-635873X / Albert REES : The Economics of Trade Unions. Chicago and London, The University of Chicago Press, 1977, 200 pp., ISBN 0-226-70702-4 - Matejko, Alexander (Relations industrielles / Industrial Relations)