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2. Biomass yield and energy value of some fast growing multipurpose trees in Nigeria;Fuwape;Journal of Biomass and Bioenergy,1997
3. Polar biomass yields: a look to the future;Hansen;Biomass and Bioenergy,1991
4. Biomass and nutrient content of 41-year old loblolly pine (Pinus taeda) plantation on a poor site in S. Carolina;Vauclear;Forest Science,1984
5. Forest mensuration.;Husch,1982