Skrita bogastva makedonije = Hidden treasures of Macedonia

Systematics and phylogeny of "Hipparion, Neohipparion, Nannippus" and "Cormohipparion", Mammalia, Equidae, from the Miocene and Pliocene of the New World von MacFadden, Bruce J. ca. 20./21. Jh

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Revision of Hipparion (Equidae, Mammalia) from the Siwalik Hills of Pakistan and India von Hussain, Syed Taseer

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Revision of the palearctic hipparion von Forstén, Ann

Miocene to pleistocene Hipparions of Kenya, Tanzania and Ethiopia von Hooijer, Dick A.

A review of Central Asiatic hipparions (Perissodactyla, Equidae) von Forstén, Ann

Hipparions from the late Miocene und Pliocene of northwestern Kenya von Hooijer, Dick A., Maglio, Vincent J.

Die Hipparionenfauna von Veles in Mazedonien von Schlosser, Max 1854-1932

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