Subjects: EUROPEAN aspen; ASPEN (Trees); AIRBORNE lasersFINLAND
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Subjects: DEAD trees; WOODPECKERS; MATING groundsPOLAND
Subjects: *Photosynthetic rates; *Trees; *Tree height
Subjects: MANGIUM; TREES; BLACK marketBRAZIL; RIO Grande do Sul (Brazil : State)
Subjects: MAPLE; TREE growth; SUGAR maple
Subjects: HARDWOOD forests; WOOD; DEAD treesNEW Hampshire; WHITE Mountains (N.H. & Me.)