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Jerry W Riffle
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Nursery diseases of western conifers
Jerry W. Riffle · Dept. of Agriculture, Forest Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
11 sayfa · 1979
Conifers / Diseases and pests / Forest nurseries
Diseases of trees in the Great Plains
Jerry W Riffle · U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station
149 sayfa · 1986
Trees / Diseases and pests