Giuliano, Mario Keywords: Contracts | Private international law | Law of contracts | Mots clefs: Contrats | Droit international privé | Droit des obligations | ABSTRACT Mario Giuliano addresses the subject of his course in the context of a Comparative Law approach to the main problems raised by conflicts of law on matters relating to contracts. After a study of the principle and theoretical justification of the autonomy law, the author focuses on the question of the implementation of the autonomy law. He then examines th…