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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, István László, - 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]