HALLETT, G. (1981). The Economics of agricultural policy. Basil Blackwell.
Tohutoru Kātū Chicago (17th ed.)HALLETT, Graham. The Economics of Agricultural Policy. Oxford: Basil Blackwell, 1981.
Tohutoro MLA (9th ed.)HALLETT, Graham. The Economics of Agricultural Policy. Basil Blackwell, 1981.
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