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1by de Jager, A., International Society for Horticultural Science, Wageningen (Netherlands) eng, International Symposium on Horticultural Economics in Developing Countries eng 16-23 Jul 1989 1 Alemaya (Ethiopia), Verhaegh, A.P., Alemaya Univ. of Agriculture (Ethiopia). Commission Economics and Management eng 21942
Published 1991Texto bibliotecaFAO IT