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1Biomass, nutrient and energy estimation of mixed Southern hardwoods using an area sampling techniqueby 57837 CLARK, A., 105040 PHILLIPS, D., 131664 WILLIFORD, M., 68984 FREDERICK, D.J., 70811 GARDNER, E.W., 68978 Frayer, W.E., 39485 (ed.), 2 IUFRO, Viena (Austria), 5526 Colorado University, Col. (EUA). Department of Forest and Wood Sciences, 18111 Society of American Foresters, Maryland (EUA), 39157 Workshop in Forest Resource Inventories, Colorado (EUA), 23-26 Jul 1979bibliotecaIICA