Case 215/84: Reference for a preliminary ruling by the Tribunal de Grande Instance, Versailles, by judgment of that court of 6 July 1984 in the case of Ministere Public and the following civil parties: 1. Syndicat National des Gerants Lib res (SNGL), 2. Chambre Syndicale Nationale du Commerce et Reparation Automobile (CSNCRA) and 3. B. Thomas, J. Bruneau, M. Le Breton, P. Parent, G. Guillemin, G. Loiselier and E. Szelag v. Marie-Helene Ferey nee Herricot and Societe ERG as defendant in the civil proceedings