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  1. Route near the thirty-fifth parallel explored by Lieutenant A.W. Whipple, Topographical Engineers, in 1853 and 1854.
    By: Bigelow, John M. - Whipple, Amiel Weeks, - United States.
    Publication info: Washington, D.C. :B. Tucker,1856.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
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