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  1. Histological differentiation among abiotic causes of conifer needle necrosis /
    By: Carlson, Clinton E. - Gilligan, Carma J. - Intermountain Forest and Range Experiment Station (Ogden, Utah)
    Publication info: [Ogden, Utah] :U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station,1983.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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