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Nichols M.A., . (1990) Aspagarus production in the tropics. In: International Horticultural Conference, 7-9 Aug 1990, Serdang Selangor (Malaysia).
Nichols M.A., . (1990) Horticultural education a new initiative. In: International Horticultural Conference, 7-9 Aug 1990, Serdang Selangor (Malaysia).