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Fiction History Science Philosophy

7 works shown

Showing books by Donald Copes

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DL

Donald L. Copes

7+ works in the catalogue

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Books

Rooting Sitka Spruce from Southeast Alaska

Donald L. Copes

Bark Scoring Problem Grafts in Five Douglas-fir Seed Orchards

Donald L. Copes

Graft Incompatibility in Pinus Contorta

Donald L. Copes

Interstock Trials with Grafted Coastal Douglas-fir

Donald L. Copes

Effect of Month of Grafting on Douglas-fir Graft Compatibility

Donald L. Copes

Selection and Propagation of Highly Graft-compatible Douglas-fir Rootstocks, a Case History

Donald L. Copes

Effects of Leader Topping and Branch Pruning on Efficiency of Douglas-fir Cone Harvesting with a Tree Shaker

Donald L. Copes

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