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...
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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...
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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"...
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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:...
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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...
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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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