Dulfer, E. (1974). Operational efficiency of agricultural cooperatives in developing countries. Food and Agriculture Organization of the United Nations.
Chicago-viite (17. p.)Dulfer, Eberhard. Operational Efficiency of Agricultural Cooperatives in Developing Countries. Rome: Food and Agriculture Organization of the United Nations, 1974.
MLA-viite (9. p.)Dulfer, Eberhard. Operational Efficiency of Agricultural Cooperatives in Developing Countries. Food and Agriculture Organization of the United Nations, 1974.
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