Van Zuylen Frères v. HAG A.G. Case 192/73. Decision of July 3, 1974. Preliminary ruling on request of the Tribunal d Arrondissement of Luxembourg - Common Market Law Review View Van Zuylen Frères v. HAG A.G. Case 192/73. Decision of July 3, 1974. Preliminary ruling on request of the Tribunal d Arrondissement of Luxembourg by - Common Market Law Review Van Zuylen Frères v. HAG A.G. Case 192/73. Decision of July 3, 1974. Preliminary ruling on request of the Tribunal d Arrondissement of Luxembourg 11 4 Common Market Law Review