sponsored by the Commission of the European Communities, Directorate-General for Agriculture, Coordination of Agricultural Research ; edited by R. Thompson, R. CaseyM. Nijhoff Publishers for the Commission of the European Communities1983
edited by W. G. Pollmer and R. H. Phipps ; sponsored by the Commission of the European Communities, Directorate-General for Agriculture, Coordination of Agricultural ResearchM. Nijhoff Publishers for the Commission of the European Communities1980