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1book part bibliotecaUNESCO
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2Texto bibliotecaCIAT
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6by Joint UNESCO/CCTA Symposium on Vegetation in relation to the Soil in the Plains and Lower Mountain Regions of the Equatorial and Sub-equatorial Zones and in the Adjoining Tropical Areas, Abidjan, Côte d'Ivoire, 1959, Commission for Technical Cooperation in Africa South of the Sahara, Baren, F.A. vanprogramme and meeting document bibliotecaUNESCO
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7by Joint UNESCO/CCTA Symposium on Vegetation in relation to the Soil in the Plains and Lower Mountain Regions of the Equatorial and Sub-equatorial Zones and in the Adjoining Tropical Areas, Abidjan, Côte d'Ivoire, 1959, Commission for Technical Cooperation in Africa South of the Sahara, Baren, F.A. vanprogramme and meeting document bibliotecaUNESCO