Skapski, Józef Keywords: Socialist countries | Sale | Law of contracts | Private international law | International commercial law | Mots clefs: Pays socialistes | Vente | Droit des obligations | Droit international privé | Droit commercial international | ABSTRACT The legal rules concerning foreign trade were unified quite extensively (in 1972) in one of the regions of the socialist countries grouped in the Council of Mutual Economic Assistance. However, the existing legal situation is not always satisfactory, and many doubts that nee…