Conway, G. R., & Barbier, E. B. (1990). After the green revolution: Sustainable agriculture for development. London: Earthscan Publications.
Chicago-viite (17. p.)Conway, Gordon R., ja Edward B. Barbier. After the Green Revolution: Sustainable Agriculture for Development. London: Earthscan Publications, 1990.
MLA-viite (8. p.)Conway, Gordon R., ja Edward B. Barbier. After the Green Revolution: Sustainable Agriculture for Development. London: Earthscan Publications, 1990.
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