00552nam a2200181Ia 4500 CTU_17111 210402s9999 xx 000 0 und d 634 F716/N134 Sandra Brown FAO forestry paper N134: Estimating biomass and biomass change of tropical forests: a primer Sandra Brown, FAO Rome FAO 1997 forests and forestry Nguyễn Quang Điền, 970611 Trung tâm Học liệu Trường Đại học Cần Thơ