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Dutchman Peak Lookout and Squaw Peak Lookout: heritage resource evaluation and rehabilitation project report

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How to identify Dutch elm disease /

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Improved sanitation practice for control of Dutch elm disease /

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How to save Dutch elm diseased trees by pruning /

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Dutch elm disease and its control /

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Dutch elm disease control : intensive sanitation and survey economics /

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Dutch elm disease control : performance and costs : cost updated to 1979 and reaffirmed /