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Canadian population and northern colonization : symposium presented to the Royal Society of Canada in 1961. La population canadienne et la colonisation du grand nord; colloque présenté à la Société royale du Canada en 1961 /
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Canadian population and northern colonization : symposium presented to the Royal Society of Canada in 1961. La population canadienne et la colonisation du grand nord; colloque présenté à la Société royale du Canada en 1961 /
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Environmental economics and natural resource management /
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Environmental economics and natural resource management /
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Environmental economics and natural resource management /
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Environmental economics and natural resource management /
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Environmental and natural resource economics : a contemporary approach /
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Environmental and natural resource economics : a contemporary approach /
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Human capital in Egypt : the road to sustainable development /
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optimum sample size for estimating dura crop yield rate in sudan
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Resource economics : an economic approach to natural resource and environmental policy /
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Economics of Natural Resources, the Environment and Policies /
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African development report 2007 : natural resources for sustainable development in Africa /
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Economics of natural resources and the environment /
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Economics of natural resources and the environment /
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Egypt's agricultural development, 1800-1980 : technical and social change /
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Egypt's agricultural development, 1800-1980 : technical and social change /
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regional workshop on in- service training of trainers on agricultural proroject analysis cairo, egypt, 13-23 december 1986 /
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mesurer la corruption en afrique : african governance report IV /
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transboundary natural resource disputes in Africa /
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mesurer la corruption en afrique : prendre en compte la dimension internationale /
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mesurer la corruption en afrique : african governance report IV /
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Major crops and water scarcity in Egypt : Irrigation Water Management under Changing Climate /
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Essays in some topics of modern economic theory : renewable resource, survival problem, and labour union /
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Sustainable Agricultural Development Strategy Towards 2030 /
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Economic growth and resources : proceedings of the fifth world congress of the International Economic Association held in Tokyo, Japan, 1977 /
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Economic growth and resources : proceedings of the fifth world congress of the International Economic Association held in Tokyo, Japan, 1977 :
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