by John S. Hard
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Identification of destructive Alaska for...
Vertical distribution of cones in red pi...
Frost damage to red pine conelets
Effects of semistarvation during late la...
Field and laboratory techniques for eval...
The forest ecosystem of southeast Alaska
Evaluation or aerially-applied nuclear p...
Control of Douglas-fir tussock moth by a...
Effects of aerial application of DDT on ...
Aerial spray adjuvants for herbicidal dr...
Fungicide drift from aerial and ground s...
Air-assisted spraying in crop protection