by Donald A Perala
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Growth of nitrogen-fertilized and thinne...
Self-thinning and stockability of the Ci...
Clone expansion and competition between ...
A provisional assessment of triclopyr he...
Aspen in the north central States
Aspen sucker production and growth from ...
The Golden Spruce
Spruce root basketry of the Alaska Tling...
Wholesale list
Orchard, nursery and Christmas trees
Spruce-fir management and spruce budworm
Wholesale nursery stock - Christmas tree...