1990
“Iterative Increase Of Economic Tree Species In Managed Swidden-Fallows Of The Amazon”. Agroforestry Systems 11 (2): 175-197. doi:10.1007/BF00838727. https://doi.org/10.1007/BF00838727.
. 1990. “Land-Use By Immigrant Baoulé Farmers In The Taï Region, South-West Côte D'ivoire (Ivory Coast)”. Agroforestry Systems 11 (2): 101-123. doi:10.1007/BF00838724. http://link.springer.com/article/10.1007/BF00838724.
. 1990. “Temple Forests In India's Forest Development”. Agroforestry Systems 11 (3): 199-211. doi:10.1007/BF00045899. http://link.springer.com/article/10.1007/BF00045899.
. 1990. “Use Of Native Browse By Fulani Cattle In Central Nigeria”. Agroforestry Systems 12 (3): 217-228. doi:10.1007/BF00137285. http://link.springer.com/article/10.1007/BF00137285.
. 1990. “Workshop To Develop An Agroforestry Technology Information Kit, November 4-13, 1989”. Quezon City, Philippines; Silang Cavite, Philippines; Manila, Philippines: Philippene Dept. of Environment and Natural Resources (DENR); International Institute of Rural Reconstruction (IIRR); Ford Foundation (FF). http://www.worldcat.org/oclc/51168241.
. 1990. 1991
“Agricultural Diversification Among Smallholder Rattan Cultivators In Central Kalimantan, Indonesia”. Agroforestry Systems 13 (1): 27-40. doi:10.1007/BF00129617. https://doi.org/10.1007/BF00129617.
. 1991. “Agroforestry, Attitude Towards Risk And Nutrient Availability: A Case Study Of South Indian Farming Systems”. Agroforestry Systems 15 (1): 1-15. doi:10.1007/BF00046275. http://link.springer.com/article/10.1007/BF00046275.
. 1991. “A Diagnostic Survey Of Shifting Cultivation In Northern Laos: Targeting Research To Improve Sustainability And Productivity”. Agroforestry Systems 13 (2): 95-109. doi:10.1007/BF00140235. https://doi.org/10.1007/BF00140235.
. 1991. “Nfu's Annual Conference 1991”. Proceedings Of Nfu's Annual Conference 1991: Natural Resource Use And Changing Society, Interdisciplinary Approaches To Development, Agricultural University Of Norway, Aas, 23-24 May 1991.. Aas [Ås], Norway; Oslo, Norway: Norwegian Centre for International Agricultural Development, Agricultural University of Norway; Norwegian Association for Development Research. http://www.worldcat.org/oclc/29625062.
. 1991. “No Hunting! Biodiversity, Indigenous Rights, And Scientific Poaching”. Cultural Survival Quarterly Magazine 15 (3): 14-18. http://www.culturalsurvival.org/publications/cultural-survival-quarterly/panama/no-hunting-biodiversity-indigenous-rights-and-scient.
. 1991. “Traditional Agroforestry Practices In Zimbabwe”. Agroforestry Systems 14 (2): 99-111. doi:10.1007/BF00045726. http://link.springer.com/article/10.1007/BF00045726.
. 1991. 1992
“The Influence Of Karité (Vitellaria Paradoxa) And Néré (Parkia Biglobosa) Trees On Sorghum Production In Burkina Faso”. Agroforestry Systems 17 (2): 97-118. doi:10.1007/BF00053116. https://doi.org/10.1007/BF00053116.
. 1992. “Karité (Vitellaria Paradoxa) And Néré (Parkia Biglobosa) Associated With Crops In South Mali”. Agroforestry Systems 18 (2): 89-105. doi:10.1007/BF00115407. https://doi.org/10.1007/BF00115407.
. 1992. 1993
1994
Development Of Agriculture In The Sudan: An Annotated Bibliography With An Introductory Essay. Sudan Library Series No. 19. Khartoum, Sudan: University of Khartoum, Institute of African and Asian Studies, Khartoum University Press. http://www.worldcat.org/oclc/32608519.
. 1994.