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    University Press. pp. 180–181. ISBN 0-801-88221-4. OCLC 62265494. Geissmann, Thomas (December 1995). "Gibbon systematics and species identification" (PDF)...
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    November 2021. "Appendices | CITES". cites.org. Retrieved 2022-01-14. Geissmann, Thomas. "Gibbon Systematics and Species Identification". Retrieved 2006-04-13...
    17 KB (1,893 words) - 10:44, 11 June 2024
  • ARKive - images and movies of the white-handed gibbon (Hylobates lar) Gibbon Conservation Center Thomas Geissmann's Gibbon Research Lab and Gibbon Network...
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    van Gulik 1967, p. 37. Eberhard 1968, p. 52. Eberhard 1968, p. 192. Geissmann, Thomas (2008), "Gibbon paintings in China, Japan, and Korea: Historical distribution...
    92 KB (14,024 words) - 11:24, 28 June 2024
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    Organs. 87 (Suppl. 62): 32–43. doi:10.1159/000144209. ISSN 1422-6405. "Thomas Geissmann's Gibbon Research Lab.: Die Gibbons (Hylobatidae): Eine Einführung"...
    25 KB (2,311 words) - 20:34, 3 July 2024
  • Thumbnail for Sumatran lar gibbon
    ARKive - images and movies of the white-handed gibbon (Hylobates lar) Gibbon Conservation Center Thomas Geissmann's Gibbon Research Lab and Gibbon Network...
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    Bibcode:2010MolPE..55..454M. doi:10.1016/j.ympev.2010.01.032. PMID 20138221. Geissmann, Thomas (2003). "Taxonomy and evolution of gibbons". Evolutionary Anthropology:...
    34 KB (3,508 words) - 06:44, 27 July 2024
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    Siamang (category Taxa named by Thomas Stamford Raffles)
    siamang | Dictionary.com". www.dictionary.com. Retrieved 2022-02-14. Geissmann, Thomas. "Gibbon Systematics and Species Identification". Retrieved 2006-04-13...
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    original on August 30, 2023. Retrieved August 27, 2023. Brockelman, W; Geissmann, T. (2019). "Hoolock leuconedys". IUCN Red List of Threatened Species...
    48 KB (2,194 words) - 15:42, 11 May 2024
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    lore, E. J. Brill, Leiden, Holland. There is a brief summary at [1] Thomas Geissmann, Gibbon paintings in China, Japan, and Korea: Historical distribution...
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