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  1. Abbildung und Beschreibung blühender Cacteen /von L. Pfeiffer und Fr. Otto ; figures des cactées en fleur, peintes et lithographiées d'après nature avec un texte explicatif, par Louis Pfeiffer et Fr. Otto.
    By: Pfeiffer, Ludwig Georg Karl, - Dondorf, Bernhard, - Fischer, Theodor Georg Viktor. - Fischer, Theodor. - Francke, Gustav. - Otto, Friedrich - Prestele, Franz Joseph Ulrich.
    Publication info: Cassel :T. Fischer,1843-1850.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
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  2. Catalogue of Auriculidae, Proserpinidae, and Truncatelidae in the collection of the British Museum,
    By: British Museum (Natural History). - Pfeiffer, Ludwig Georg Karl,
    Publication info: LondonPrinted by order of the Trustees1857
    Contributed by: Gerstein - University of Toronto (archive.org)
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  3. Catalogue of Pulmonata or air-breathing Mollusca, in the collection of the British Museum; pt. 1.
    By: British Museum (Natural History). - Pfeiffer, Ludwig Georg Karl,
    Publication info: LondonPrinted by order of the Trustees1855
    Contributed by: Gerstein - University of Toronto (archive.org)
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  4. Conspectus Cyclostomaceorum emendatus et auctus. Pneumonopomorum monographiae prodromus. Auctore Dr. Ludovico Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis,Th Fischeri,1852.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  5. Correspondence : Pfeiffer (Ludwig) and Engelmann (George).
    By: Pfeiffer, Ludwig Georg Karl,
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  6. Enumeratio diagnostica cactearum hucusque cognitarum /auctore Ludovico Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Berolini : L. Oehmigke, 1837.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
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  7. Flora von Niederhessen und Münden. Beschreibung aller im Gebiete wildwachsenden und im Grossen angebauten Pflanzen.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Kassel,T. Fischer,1847-1855.
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York Botanical Garden
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  8. Die Gattung Cylindrella Pfr. in Abbildungen nach der Natur mit Beschreibungen / von Louis Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Nürnberg :Verlag von Bauer und Raspe, Julius Merz,1862.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  9. Index molluscorum maris japonici, conscriptus et tabulis iconum xvi illustratus a Guilielmo Dunker.
    By: Dunker, Wilhelm Bernhard Rudolph Hadrian, - Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis Cattorum [Kassel]sumptibus T. Fischer,1882.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  10. Kritisches Register zu Martini und Chemnitz's Systematischem Konchylien-Kabinet / von Dr. L. Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl, - Chemnitz, Johann Hieronymus, - Martini, Friedrich Heinrich Wilhelm,
    Publication info: Kassel :In Kommission bei Th. Fischer,1840.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  11. Kritisches Register zu Martini und Chemnitz's Systematischem Konchylien-Kabinet / von Dr. L. Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl, - Chemnitz, Johann Hieronymus, - Martini, Friedrich Heinrich Wilhelm,
    Publication info: Kassel :In Kommission bei Th. Fischer,1840.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  12. Malakozoologische Blätter.
    By: Clessin, Steph., - Menke, Karl Theodor, - Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassel :T. Fischer,1854-1891.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  13. Monographia auriculaceorum viventium. Sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum, nec non fossilium enumeratione. Accedente proserpinaceorum nec non generis truncatellae historia. Auctore Ludovico Pfeiffer ...
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis,Sumptibus Theodore Fischer,1856.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  14. Monographia pneumonopomorum viventium ... auctore Ludovico Pfeiffer. Supplementum primum /
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis :T. Fischer,1858.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  15. Monographia pneumonopomorum viventium ... auctore Ludovico Pfeiffer. Supplementum tertium monographiae auriculaceorum, parte secunda auctum /
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis :sumptibus T. Fischer,1876.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  16. Monographia pneumonopomorum viventium ... auctore Ludovico Pfeiffer. Supplementum secumdum /
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis :sumptibus T. Fischer,1865.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  17. Monographia pneumonopomorum viventium ... accedente fossilium enumeratione. Autore Ludovico Pfeiffer ...
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis,sumptibus Theodori Fischer; [etc., etc.]1852.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  18. Museum Boltenianum, sive, Catalogus cimeliorum e tribus regnis naturae quae olim collegerat Joa. Fried. Bolten ....
    By: Bolten, Joachim Friedrich, - Lichtenstein, Anton August Heinrich, - Pfeiffer, Ludwig Georg Karl, - Röding, Peter Friedrich.
    Publication info: Hamburgi :Typis Johan. Christi. Trappii,[1798]
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  19. Nomenclator botanicus. Nominum ad finem anni 1858 publici juris factorum, classes, ordines, tribus, familias, divisiones, genera, subgenera vel sectiones designatium enumeratio alphabetica. Adjectis auctoribus, temporibus, locis systematicis, apud varios, notis literariis atque etymologicis et synonymis
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis,Sumptibus T. Fischeri,1873-74.
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York Botanical Garden
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  20. Novitates conchologicae. Series prima. Mollusca extramarina. Beschreiber und Abbildung, neuer oder kritischer Land-und Süsswasser-Mollusken, von Louis Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl, - Fischer, Theodor,
    Publication info: Cassel,T. Fischer,1854-79.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  21. Symbolae ad historiam heliceorum / auctore Lud. Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis :Sumptibus & typis Th. Fischeri,1841-1846.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  22. Zeitschrift für Malakozoologie.
    By: Menke, Karl Theodor, - Pfeiffer, Ludwig Georg Karl,
    Publication info: Hannover :Hahn'schen Hofbuchhandlung,1844-1853.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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