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  1. By: Gray, Asa, - Underwood, Lucien Marcus, - Urban, Ignaz, - University Press (Cambridge, Mass.) - John Wilson and Son.
    Publication info: [1878-1891]
    Holding Institution: Harvard University Botany Libraries
  2. By: Urban, Ignaz,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  3. By: Ascherson, Paul, - Urban, Ignaz, - Graebner, Paul,
    Publication info: Leipzig, Verlag von Gebrüder Borntraeger, 1904
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
  4. By: Martius, Karl Friedrich Philipp von, - Eichler, August Wilhelm, - Urban, Ignaz, - Endlicher, Stephan, - Fenzl, Eduard, - Mary, Benj. - Oldenburg, R.
    Publication info: Monachii et Lipsiae [Munich & Leipzig], R. Oldenbourg, 1840-1906
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
  5. By: Urban, Ignaz,
    Publication info: Berlin, Gebrüder Borntraeger (Ed. Eggers), 1883
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
  6. By: Urban, Ignaz,
    Publication info: [Place of publication not identified], [publisher not identified], [1914-1930]
    Holding Institution: University Library, University of Illinois Urbana Champaign
  7. By: Urban, Ignaz, - Urban, Ignaz,
    Publication info: Berolini :Parisiis, Fratres Borntraeger ;Paul Klincksieck, 1898-1928
    Holding Institution: Multiple institutions
    BHL Collections: New York Botanical Garden
  1. By: Urban, Ignaz,
    Type: Article
    In: Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie
    Volume: 42
    Date: 1908
    Page Range: 49--177
    Publication Info: Stuttgart [etc.], Schweizerbart [etc.],
  2. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1883-04-19
    Publication Info: [1878-1891]
  3. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1888-04-02
    Publication Info: [1878-1891]
  4. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1891-08-31
    Publication Info: [1878-1891]
  5. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1883-12-17
    Publication Info: [1878-1891]
  6. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1887-12-07
    Publication Info: [1878-1891]
  7. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1886-01-16
    Publication Info: [1878-1891]
  8. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1891-05-09
    Publication Info: [1878-1891]
  9. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1888-11-21
    Publication Info: [1878-1891]
  10. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1886-11-08
    Publication Info: [1878-1891]
  11. By: Urban, Ignaz,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1886-11-08
    Publication Info: [1878-1891]