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  1. Die Protozoen als Krankheitserreger : Nachtraege.
    By: Pfeiffer, L. (Ludwig),
    Edition: 2. sehr erweiterte Aufl.
    Publication info: Jena :G. Fischer,1895.
    Holding Institution: MBLWHOI Library
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  1. Description of a new Helix and Streptaxis, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 4
    Series: 2
    Date: 1849
    Page Range: 78--79
    Publication info: London,Taylor and Francis, Ltd.
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  2. Description of a new Pupina and two new Helicinas, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1850
    Date: 1851
    Page Range: 97--98
    Publication info: London :Academic Press, [etc.],1833-1965.
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  3. Descriptions of eighteen new species of land snails, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 20
    Date: 1854
    Page Range: 83--87
    Publication info: London :Academic Press, [etc.],1833-1965.
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  4. Descriptions of fifty-seven new species of Helicea from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1856
    Date: 1857
    Page Range: 324--336
    Publication info: London :Academic Press, [etc.],1833-1965.
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  5. Descriptions of forty-seven new species of land shells, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1861
    Date: 1861
    Page Range: 20--29
    Publication info: London :Academic Press, [etc.],1833-1965.
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  6. Descriptions of sixteen new species of Pneumonopoma, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1856
    Date: 1857
    Page Range: 336--339
    Publication info: London :Academic Press, [etc.],1833-1965.
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  7. DESCRIPTIONS OF TEN NEW SPECIES OF BULIMUS, FROM THE COLLECTION OF H. CUMING, ESQ
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1858
    Date: 1858
    Page Range: 256--258
    Publication info: London :Academic Press, [etc.],1833-1965.
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  8. Descriptions of ten new species of land-shells from the collection of George French Angas, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1863
    Date: 1864
    Page Range: 526--529
    Publication info: London :Academic Press, [etc.],1833-1965.
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  9. Descriptions of thirty-six new land-shells, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1862
    Date: 1863
    Page Range: 268--278
    Publication info: London :Academic Press, [etc.],1833-1965.
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  10. Descriptions of thirty-six new species of land-shells from Mr H. Cuming's collection
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1860
    Date: 1860
    Page Range: 133--141
    Publication info: London :Academic Press, [etc.],1833-1965.
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  11. Descriptions of thirty-three new species of land-shells, from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1856
    Date: 1857
    Page Range: 385--392
    Publication info: London :Academic Press, [etc.],1833-1965.
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  12. Descriptions of twelve new species of Vitrina and Succinea from the collection of H. Cuming, Esq
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1849
    Date: 1850
    Page Range: 132--134
    Publication info: London :Academic Press, [etc.],1833-1965.
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  13. Descriptions of twenty-seven new species of land-shells from the collection of H. Cuming
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1859
    Date: 1859
    Page Range: 23--29
    Publication info: London :Academic Press, [etc.],1833-1965.
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  14. Diagnosen neuer Heliceen
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 4
    Date: 1857
    Page Range: 229--232
    Publication info: Cassel :T. Fischer,1854-1891.
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  15. Diagnosen neuer Landschnecken
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 4
    Date: 1857
    Page Range: 155--158
    Publication info: Cassel :T. Fischer,1854-1891.
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  16. Diagnosen neuer Landschnecken
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 3
    Date: 1856
    Page Range: 206--209
    Publication info: Cassel :T. Fischer,1854-1891.
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  17. Diagnosen neuer Landschnecken
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 3
    Date: 1856
    Page Range: 43--52
    Publication info: Cassel :T. Fischer,1854-1891.
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  18. Drie neue Landschenecken aus Surinam
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 19
    Date: 1872
    Page Range: 74--76
    Publication info: Cassel :T. Fischer,1854-1891.
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  19. Nachträge zum zweiten Supplemente meiner Monographia Heliceorum (Fortsetzung)
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 6
    Date: 1859
    Page Range: 19--53
    Publication info: Cassel :T. Fischer,1854-1891.
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  20. Zur Gattung Amphipeplea Nilss
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 1
    Date: 1854
    Page Range: 63--64
    Publication info: Cassel :T. Fischer,1854-1891.
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  21. Zur Molluskenfauna der Insel Cuba
    By: Pfeiffer, L. (Ludwig),
    Type: Article
    In: Malakozoologische Blätter.
    Volume: 1
    Date: 1854
    Page Range: 170--213
    Publication info: Cassel :T. Fischer,1854-1891.
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