Vuosi 1989 - Year 1989
Pohjonen, V. 1989. Central nurseries development for industrial forest plantation. Appraisal on a Project proposal and project document. Nordic Development Fund. Helsinki. 53 p.
Pohjonen, V. 1989. East Usambara catchment forestry project. Appraisal on a Project Proposal and Project Document submitted for FINNIDA. Ministry for Foreign Affairs, Helsinki. 18 p.
Pohjonen, V. 1989. Energy forestry and use of biomass fuels in Ethiopia. Pyy, S. (Ed.) 1989. Strategies and means of development. University of Joensuu. Dept. of Social Policy and Sociology. Discussion Papers 9:83-95. ISBN 951-696-873-2.
Pohjonen, V. 1989. Establishment of fuelwood plantations in Ethiopia. University of Joensuu. Silva Carelica 14:1-388. ISBN 951-696-839-2.
Pohjonen, V. 1989. Eukalyptus - Etiopian energiapuu. Artikkeli. 8.9.1989. (Blogspot)
Pohjonen, V. 1989. Metsityksen suuri linja. Kehitys-lehti 3/89:21-23. (Blogspot)
Pohjonen, V. 1989. Opas puuvartisen biomassan maailmaan (kirja-arvostelu). Maatalous 10 (1989):196.
Pohjonen, V. 1989. Reforestation in Ethiopia. Mimeographed. 62 p.
Pukkala, T. & Pohjonen, V. 1989. Forest inventory and management planning in the fuelwood plantations of Ethiopia. University of Joensuu. Silva Carelica 13:1-110 + App. ISBN 951-696-817-1. (PDF)
Pukkala, T. & Pohjonen, V. 1989. Yield models for Ethiopian highland eucalypts. United Nations Sudano-Sahelian Office. New York. 53 p. (PDF)
