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1876, Journal of the Academy of Natural Sciences of Philadelphia, Volume n.s. v. 8, pt. 2, art. 4, 93-154
Book
1876, Journal of the Academy of Natural Sciences of Philadelphia, Volume n.s. v. 8, pt. 2, art. 7, 185-187
Book
1875, Report of the United States Geological Survey of the Territories, Volume 2, 302 p., [57] p. of plates
Book
1896, xvi, 547, [4] p. ([4] p. at end advertisements)
Book
1889, Bulletin of the United States National Museum, Volume no. 34, 525
Book
1898, Publications of the University of Pennsylvania, 36, 136
Book
1883, Report of the United States Geological Survey of the Territories, Volume 3, xxxiv p., 1 l., 1009 p. illus., LXXV (i.e. 134) pl. (part fold.)
Book
1887, Bulletin of the United States National Museum, Volume no. 32, ii p., 1 l., 5-98
Book
1974, Natural sciences in America., ISBN 0405057296, xix, 467, xvi, 547
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