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Use of maps for planning research farms: IITA research guide, No. 7, Couper, D. C., IITA research guide, No. 7, International Institute of Tropical Agriculture (IITA), 1996. |
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Techniques de defrichage dans les stations agricoles experimentales: Guide de recherche de l'Iita, No. 5, Couper, D. C., Guide de recherche de l'Iita, No. 5, International Institute of Tropical Agriculture (IITA), 1995. |
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Building and maintenance of roads on agricultural research farms: IITA research guide, No. 20, Couper, D. C., IITA research guide, No. 20, International Institute of Tropical Agriculture (IITA), 1995. |
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Aquatic resources of agriculture research stations: IITA research guide, No. 23, Couper, D. C., IITA research guide, No. 23, International Institute of Tropical Agriculture (IITA), 1995. |
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Farm records and work planning on agricultural research farms: IITA research guide, No. 18, Couper, D. C., IITA research guide, No. 18, International Institute of Tropical Agriculture (IITA), 1995. |
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No-till farming in the humid and subhumid tropics of Africa: IITA research guide, No. 3, Couper, D. C., IITA research guide, No. 3, International Institute of Tropical Agriculture (IITA), 1995. |
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Use of graded contour banks for soil conservation: IITA research guide, No. 6, Couper, D. C., International Institute of Tropical Agriculture (IITA), 1995. |
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La construction et l'entretien des routes dans les stations experimentales: Guide de recherche de I'iita No. 20, Couper, D. C., Guide de recherche de I'iita No. 20, International Institute of Tropical Agriculture (IITA), 1994. |
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Ressources aquatiques en station de recherche agricole: Guide de recherche de l'Iita No. 23, Couper, D. C., Guide de recherche de l'Iita No. 23, International Institute of Tropical Agriculture (IITA), 1994. |
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Land clearing for agricultural research stations: IITA research guide, No. 5, Couper, D. C., IITA research guide, No. 5, International Institute of Tropical Agriculture (IITA), 1994. |
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Utilisation des cartes dans la planification des fermes experimentales: Guide de recherche de l'Iita, No. 7, Couper, D. C., Guide de recherche de l'Iita, No. 7, International Institute of Tropical Agriculture (IITA), 1993. |
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Consevation des sols: utilization des banquettes a double courbure: Guide de recherche de l'Iita, No. 6, Couper, D. C., Guide de recherche de l'Iita, No. 6, International Institute of Tropical Agriculture (IITA), 1993. |
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Le non-labour dans les tropiques humides et subhumides d'Afrique: Guide de recherche de l'Iita, No. 3, Couper, D. C., Guide de recherche de l'Iita, No. 3, International Institute of Tropical Agriculture (IITA), 1993. |
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Macrophomina phaseolina on the tropical cover crops Mucuna pruriens var. utilis, Berner, D. K., Killani, A. S., Aigbokhan, E. and Couper, D. C., in: Plant Disease, volume 76, number 12, pages 1283, 1992. |
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Operations agricoles dans les fermes experimentales: Guide de recherche de l'Iita, No. 18, Couper, D. C., Guide de recherche de l'Iita, No. 18, International Institute of Tropical Agriculture (IITA), 1992. |
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Leves topographiques pour les stations de recherche: Guide de recherche de l'Iita, No. 1, Couper, D. C., Guide de recherche de l'Iita, No. 1, International Institute of Tropical Agriculture (IITA), 1991. |
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Land survey for research stations: IITA research guide, No. 1, Couper, D. C., IITA research guide, No. 1, International Institute of Tropical Agriculture (IITA), 1991. |
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Alley cropping for food crop production in the humid and subhumid tropics, Kang, B., Van der Kruijs, A. C. M. B. and Couper, D. C., pages 16-26, IDRC, 1989. |
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Agronomic problems with large scale mechanized land development and farming in West Africa, Couper, D. C., Lal, R. and Claassen, S. L., pages 149-158, 1986. |
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Land clearing and development for agricultural purposes in Western Nigeria, Couper, D. C., Lal, R. and Claassen, S. L., John Wiley & Sons, 1981. |
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Mechanical no-till maize production in an alfisol in tropical Africa, Couper, D. C., Lal, R. and Claassen, S. L., International Institute of Tropical Agriculture (IITA), 1980. |
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Land clearing and development for agricultural purposes in Western Nigeria - Lal/Russell, Couper, D. C., Lal, R. and Claassen, S. L., J. Wiley, 1980. |
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