The paper discusses the problems facing countries when managing stocks of fish that move between their EEZs and the EEZs of adjacent countries, or onto the high seas. The action needed depends on the pattern of movement of the stocks. The different patterns of movement are discussed; they vary from small local dispersions in which only a small proportion of the stock cross boundaries between national EEZs to long migrations in which virtually all the stock may move from one EEZ to another.

Policy makers as well as scientists have started to acquire an honest appreciation of the possibilities of reducing the wastage of materials which could be profitably utilized for improving or maintaining soil productivity. In addition, the great opportunities offered by making more efficient use of the potentials of biological nitrogen fixation in farming systems are now fully recognized. A number of recommendations and suggested guidelines were made by the various Working Groups during the two-week Workshop.