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Issue DateTitleAuthor(s)
1987Cameroon National Root Crops Improvement Program (C.N.R.C.I.P.)Institute of Agronomic Research
1980Cameroon National Root Crops Improvement Programme (CNRCIP): annual technical (analytic) report, 1980Institut de recherches agronomiques et forestières; Tumanteh, A.; Agueguia, A.
1979Cameroon National Root Crops Improvement Programme (CNRCIP): annual technical report, 1979Institut de recherches agronomiques et forestières; Lyonga, S.N.; Steiner, K.G.; Pfeiffer, H.; Nzietchueng, S.
1989Comparative study and evaluation of yam zone soils and the performance of six cultivars of white yam (Dioscorea rotundata) in Southeastern NigeriaAsadu, C.L.A.
1989Cost constraints on root and tuber crops production in yam based cropping system of South East NigeriaNeweke, F.I.; Ugwu, B.O.; Asadu, C.L.A.; Ezumah, H.C.
1988Demand elasticities for food crops in major yam producing areas of Southeastern NigeriaOkorji, E.C.
1984Effects of some growth regulators on in vitro tuberization in Dioscorea alata L. 'Brazo fuerte' and D. abyssinica Hoch.Université de Montréal; Jean, M.; Cappadocia, M.
1989Efficiency of resource use in food crop production in major yam producing areas of Southeastern NigeriaUgwu, B.O.
1992Elasticities of demand for major food items in a root and tuber based food system : emphasis on yam and cassava in Southeastern NigeriaInternational Institute of Tropical Agriculture; Nweke, F.I.; Okorji, E.C.; Njoku, J.E.; King, D.J.
1989Elasticities of demand for major food items in a root and tuber crops based food systemNweke, F.I.; Okorji, E.C.; Ay, P.; King, D.J.
1991Elasticities of demand for major food items in a root and tuber food system : emphasis on yam in Southeast NigeriaOkorji, E.C.; Nweke, F.I.; Njoku, J.E.; King, D.J.
1990Final report / Yam Regeneration Project (Cropping Systems Outreach)Inter-American Institute of Agricultural Sciences
1989Future of yam : a food systems analysis of yam in Eastern NigeriaNweke, F.I.; Asadu, C.L.A.; Ugwu, B.O.; Okorji, E.C.; Njoku, J.E.
1988Inter and intra state trade on root crops : a study of yam collection and distribution processesEluagu, L.S.
1990In vitro tuberization in Dioscorea alata L. 'Brazo fuerte' and 'Florido' and D. abyssinica HochUniversité de Montréal; Jean, M.; Cappadocia, M.
2000Issues in yam minisett technology transfer to farmers in Southeastern NigeriaAfrican Technology Policy Studies Network; Madukwe, M.C.; Ayichi, D.; Okoli, E.C.
1991Production costs in the yam based cropping systems of Southeastern NigeriaInternational Institute of Tropical Agriculture; Nweke, F.I.; Ugwu, B.O.; Asadu, C.L.A.; Ay, P.
1991Production costs in the yam based cropping systems of Southeastern NigeriaNweke, F.I.; Ugwu, B.O.; Asadu, C.L.A.; Ay, P.
1986Root crops digest, vol. 1, no. 1, 1985 - vol. 1, no. 5, 1986Philippine Root Crops Information Service; Bartolini, Perfecto U.
1987Root crops digest, vol. 2, no. 1, 1987 - vol. 2, no. 4, 1987Philippine Root Crops Information Service; Bartolini, Perfecto U.
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