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Lemenih, Mulugeta ,  Kassa, H. ,  [Management guide for sustainable production of frankincense: a manual for extension workers and companies managing dry forests for resin production and marketing] ,  Management guide for sustainable production of frankincense: a manual for extension workers and companies managing dry forests for resin production and marketing

Lemenih, Mulugeta ,  Kassa, H. ,  [Opportunities and challenges for sustainable production and marketing of gums and resins in Ethiopia] ,  Opportunities and challenges for sustainable production and marketing of gums and resins in Ethiopia

Lemenih, H ,  Kassa, H. ,  [Re-greening Ethiopia: history, challenges and lessons] ,  Re-greening Ethiopia: history, challenges and lessons

Negede, B. ,  Pirard, R. ,  Kassa, H. ,  [Employment in industrial timber plantations: An Ethiopian case supported by a global review] ,  Employment in industrial timber plantations: An Ethiopian case supported by a global review

Yirgu, A ,  Gezahgne, A ,  Kassa, H. ,  Tsega, M. ,  [Parasitic plant in natural Boswellia papyrifera stands at Humera, Northern Ethiopia] ,  Parasitic plant in natural Boswellia papyrifera stands at Humera, Northern Ethiopia

Tefera, B. ,  Kassa, H. ,  [Trends and Driving Forces of Eucalyptus Plantation by Smallholders in the Lake Tana Watershed of Ethiopia] ,  Trends and Driving Forces of Eucalyptus Plantation by Smallholders in the Lake Tana Watershed of Ethiopia

Kassa, H. ,  Tadesse, W. ,  Alem, S. ,  Teshome, B. ,  Garedew, E. ,  [Book of Abstracts on Agroforestry, Area Exclosure, Participatory Forest Management, Management of Dry Forests and Plantations] ,  Book of Abstracts on Agroforestry, Area Exclosure, Participatory Forest Management, Management of Dry Forests and Plantations