edited by Mauro Cappelletti, Monica Seccombe, Joseph Weiler ; : us, : gw. -- W. de Gruyter, 1986. -- (European University Institute = Institut universitaire européen ; Series A . Law = Droit = Recht = Diritto ; 2 . { Integration through law : Europe and the American federal experience / series under the general editorship of Mauro Cappelletti, Monica Seccombe, Joseph Weiler } ; v. 1 . Methods, tools and institutions ; book 1).