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  1. Correspondence : Probasco (Henry) and Engelmann (George), 1879.
    By: Probasco, Henry,
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: 1809-1884  1820-1902  Abies  Correspondence  Engelmann, George,  Fir  Letters  Pinaceae  Probasco, Henry,  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  2. Correspondence : Ward (Lester) and Engelmann (George), 1876-1882.
    By: Ward, Lester Frank,
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: (George Lincoln),  1809-1884  1822-1893  1839-1923  1841-1913  Abies  Cactaceae  Cactus  Coniferae  Conifers  Correspondence  Engelmann, George,  Fagaceae  Fir  Goodale, George L  Letters  Oak  Pinaceae  Pine  Pinus  Quercus  Scientific Expeditions  United States  Vasey, George,  Ward, Lester Frank,  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  3. Correspondence : Warder (John) and Engelmann (George), 1877-1882.
    By: Warder, J. A.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: (Constantine Samuel),  (John Aston),  1783-1840  1786-1859  1806-1889  1807-1867  1809-1884  1812-1883  1826-1901  Abies  Bignoniaceae  Catalpa  Correspondence  Engelmann, George,  Fir  Identification  Lesquereux, Leo,  Letters  Meehan, Thomas,  Nuttall, Thomas,  Oak  Pinaceae  Pine  Pinus  Quercus  Rafinesque, C. S  Riddell, John Leonard,  Warder, J. A  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  4. Effects of broom rusts on spruce and fir /
    By: Peterson, Roger S. - Intermountain Forest and Range Experiment Station (Ogden, Utah)
    Publication info: Ogden, Utah :Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1963.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Fir  Rust fungi  Spruce  West (U.S.)  
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  5. Histoire des arbres forestiers de l'Amérique septentrionale considérés principalement sous les rapports de leur usage dans les arts et de leur introduction dans le commerce ainsi que d'après les avantages qu'ils peuvent offrir aux gouvernemens en Europe et aux personnes qui veulent former de grandes plantations /
    By: Michaux, François-André,
    Publication info: Paris :De l'imprimerie de L. Haussmann,1813.
    Contributed by: Canadiana.org (archive.org)
    Subjects: America  Fir  Forests and forestry  Natural resources  Pine  Trees  Walnut  
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  6. Management of balsam twig aphids in Christmas trees /
    By: Cowles, Richard Steven. - Connecticut Agricultural Experiment Station.
    Publication info: New Haven :Connecticut Agricultural Experiment Station,[2003]
    Contributed by: University of Connecticut Libraries (archive.org)
    Subjects: Aphids  Balsam twig aphid  Christmas tree industry  Control  Diseases and pests  Economic aspects  Fir  United States  
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  7. Relationships of tree age to diameter in old-growth northern hardwoods and spruce-fir /
    By: Leak, William B. - Northeastern Forest Experiment Station (Radnor, Pa.)
    Publication info: [Broomall, Pa.?] :U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,1985.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Fir  Growth  Hardwoods  Internet resource  Spruce  Trees  
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  8. The yellow witches' broom of subalpine fir in the intermountain region /
    By: Mielke, James L. - Intermountain Forest and Range Experiment Station (Ogden, Utah)
    Publication info: Ogden, Utah :Intermountain Forest and Range Experiment Station,1957.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Fir  Great Basin  Rust fungi  
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