by Donald L. Copes
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Effects of leader topping and branch pru...
Rooting Sitka spruce from southeast Alas...
Selection and propagation of highly graf...
Bark scoring problem grafts in five doug...
Effect of date of grafting on survival i...
Effect of month of grafting on douglas-f...
Levels-of-growing-stock cooperative stud...
News letter
The Douglas-fir/ninebark habitat type in...
Response of Douglas-fir seedlings to nit...
Douglas-fir tussock moth handbook