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Johansen, C and Virmani, S M and Lai, T V and Nam, N H and Nigam, S N (1993) Use of Environmental Information Systems in Analyzing Crop Adaptation and Product ion Constraint s as an Aid to On- farm Research. In: Approaches to on-farm research in Asia: summary proceedings of the Regional Workshop on On-farm Adaptive Research, 18-20 Feb. 1993, Ho Chi Minh City, Vietnam.
Mehan, V K and Hong, N X (1994) Disease Constraints to Groundnut Production in Vietnam-Research and Management Strategies. International Arachis Newsletter, 14. pp. 8-11. ISSN 1010-5824
Sharma, S B and Siddiqi, M R and Van, N V and Hong, N X (1994) Plant-parasitic nematodes associated with groundnut in North Vietnam. Afro-Asian Journal of Nematology, 4 (2). pp. 185-189. ISSN 0963-6420