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Effects of water suspension and wet-dry cycling on fertility of Douglas-fir pollen [microform] / Donald L. Copes and Nan C. Vance (Research note PNW ; RN-527)

Effects of water suspension and wet-dry cycling on fertility of Douglas-fir pollen [microform] / Donald L. Copes and Nan C. Vance (Research note PNW ; RN-527)
Microform図書
2000<YCA-A 13.79:PNW-RN-527>
National Diet Library
  • Author HeadingCopes, Donald L Vance, Nan C Pacific Northwes...

Rooting Sitka spruce from southeast Alaska / Donald L. Copes (Research note PNW ; RN-465)

Rooting Sitka spruce from southeast Alaska / Donald L. Copes (Research note PNW ; RN-465)
Microform図書
1987<YCA-A 13.79:PNW-RN-465>
National Diet Library
  • Author HeadingCopes, Donald L Pacific Northwest Research St...

Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shaker / Donald L. Copes (Research note PNW ; 431)

Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shaker / Donald L. Copes (Research note PNW ; 431)
Microform図書
1985<YCA-A 13.79:PNW-431>
National Diet Library
  • Author HeadingCopes, Donald L Pacific Northwest Forest and ...

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