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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. Abbildung und Beschreibung blühender Cacteen [...] I. Band
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassel : Verlag von Theodor Fischer 1838-1843
    Contributed by: Biblioteca Digital del Real Jardin Botanico de Madrid
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  3. Abbildung und Beschreibung blühender Cacteen [...] II. Band
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassel : Druck und Verlag von Theodor Fischer 1845-1850
    Contributed by: Biblioteca Digital del Real Jardin Botanico de Madrid
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  4. 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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  5. Catalogue of Phaneropneumona, or terrestrial operculated Mollusca, in the collection of the British Museum / [prepared by L. Pfeiffer].
    By: British Museum (Natural History). - Pfeiffer, Ludwig Georg Karl,
    Publication info: London :Printed by order of the Trustees,1852
    Contributed by: Smithsonian Libraries
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  6. 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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  7. 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
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  8. 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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  9. Die gedeckelten Lungenschnecken (Helicinacea et Cyclostomacea) : in Abbildungen nach der Natur / von Dr. Louis Pfeiffer zu Kassel.
    By: Pfeiffer, Ludwig Georg Karl, - Chemnitz, Johann Hieronymus, - Henderson, J. B. - Martini, Friedrich Heinrich Wilhelm, - Library of Congress,
    Publication info: Nürnberg :Verlag von Bauer und Raspe (Julius Merz),1846.
    Contributed by: Smithsonian Libraries
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  10. 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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  11. 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: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
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  12. 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
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  13. 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
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  14. 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
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  15. 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
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  16. Malakozoologische Blätter.
    By: Clessin, Steph., - Menke, Karl Theodor, - Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassel :T. Fischer,1854-1891.
    Contributed by: Smithsonian Libraries
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  17. 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
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  18. Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Lipsiae [Leipzig] :Brockhaus,1848-
    Contributed by: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  19. Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Lipsiae [Leipzig] :F.A. Brockhaus,[1847]-1877.
    Contributed by: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  20. Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Lipsiae [Leipzig] :Brockhaus,1848-
    Contributed by: Smithsonian Libraries
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  21. Monographia pneumonopomorum viventium ... auctore Ludovico Pfeiffer. Supplementum primum /
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis :T. Fischer,1858.
    Contributed by: Smithsonian Libraries
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  22. 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
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  23. Monographia pneumonopomorum viventium ... auctore Ludovico Pfeiffer. Supplementum secumdum /
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis :sumptibus T. Fischer,1865.
    Contributed by: Smithsonian Libraries
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  24. 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
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  25. 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
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  26. Nomenclator botanicus [...] Vol. I. Pars altera
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis : Sumptibus Theodori Fischeri 1874-1875
    Contributed by: Biblioteca Digital del Real Jardin Botanico de Madrid
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  27. Nomenclator botanicus [...] Vol. I. Pars prior
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis : Sumptibus Theodori Fischeri 1871-1873
    Contributed by: Biblioteca Digital del Real Jardin Botanico de Madrid
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  28. Nomenclator botanicus [...] Vol. II. Pars altera
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis : Sumptibus Theodori Fischeri 1874
    Contributed by: Biblioteca Digital del Real Jardin Botanico de Madrid
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  29. Nomenclator botanicus [...] Vol. II. Pars prior
    By: Pfeiffer, Ludwig Georg Karl,
    Publication info: Cassellis : Sumptibus Theodori Fischeri 1874
    Contributed by: Biblioteca Digital del Real Jardin Botanico de Madrid
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  30. 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: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
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  31. Nomenclator heliceorum viventium : quo continetur nomina omnium hujus familiae generum et specierum hodie cognitarum, disposita ex affinitate naturali / Opus postumum Ludovici Pfeiffer.
    By: Pfeiffer, Ludwig Georg Karl, - Clessin, S.
    Publication info: Cassellis :Sumptibus Theodori Fischeri,1878-1881.
    Contributed by: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  32. 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
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  33. 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
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  34. Zeitschrift für Malakozoologie.
    By: Menke, Karl Theodor, - Pfeiffer, Ludwig Georg Karl,
    Publication info: Hannover :Hahn'schen Hofbuchhandlung,1844-1853.
    Contributed by: Smithsonian Libraries
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  1. 15. DESCRIPTIONS OF THIRTEEN NEW SPECIES OF LAND-SHELLS FROM FORMOSA, IN THE COLLECTION OF THE LATE HUGH CUMING, COLLECTED BY MR. ROBERT SWINHOE, VICE-CONSUL OF THAT ISLAND
    By: Pfeiffer, Ludwig Georg Karl, 1805-1877
    Type: Article
    In: Proceedings of The Zoological Society of London
    Volume: 1865
    Date: 1865
    Page Range: 828--831
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  2. 4. Descriptions of Eight New Species of Cyclostomacea, from the Collection of H. Cuming, Esq
    By: Pfeiffer, Ludwig Georg Karl, 1805-1877
    Type: Article
    In: Proceedings of The Zoological Society of London
    Volume: 1862
    Date: 1862
    Page Range: 115--117
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  3. 5. Description of a New Species of Helix (Nanina)
    By: Pfeiffer, Ludwig Georg Karl, 1805-1877
    Type: Article
    In: Proceedings of The Zoological Society of London
    Volume: 1862
    Date: 1862
    Page Range: 117--117
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