sponsored by the Commission of the European Communities, Directorate-General for Agriculture, Coordination of Agricultural Research ; edited by J. R. [i.e. J. M.] Sreenan
organized by the Commission of the European Communities, Joint Research Centre, Ispra Establishment, Department A Ispra (Varese) Italy, October 4-6, 1976 ; edited by H. Beilner and E. Gelenbe