Genetic Engineering of Plants and Microorganisms Important for Agriculture: A Seminar Held in the Framework of the Biomolecular Engineering Programme of the Commission of the European Communities, at the Carlsberg Laboratory in Copenhagen (October 9-10, 1984) With the Scientific Organization by Professor D. Von Wettstein : Sponsored by the Commission of the European Communities, Directorate-General for Science, Research and Development, Directorate Biology, Radiation Protection and Medical Research, Division Genetics and Biotechnology