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Grubb P,. (1981). Equus burchelli. Mammalia, 157, 1–9.
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Hoyt Df, T. C. (1981). Gait and the energetics of locomotion in horses. Nature, 292, 239–240.
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HUGHES RD et al,. (1981). Interactions between Camague horses and horseflies. Bull Entomol Res 71, , 227–242.
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Leblanc Ma, B. M. (1981). Mise au point d`une épreuve destinée de la reconnaissance du jeune par la mère chez chaval. Biol Beh, 6, 283–290.
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Prescott J,. (1981). Suckling behavior of Llama and Chapman's Zebra in captivity. Appl Anim Ethol, 7, 293–299.
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Rau Re,. (1981). Zur Geschichte und Präparation der Mainzer Quaggas. Mainzer Naturw Archiv, 19, 221–236.
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TURNER JR JW et al,. (1981). Elimination marking behavior in feral horses. Can J Zool, 59, 1561–1566.
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Waage Jk,. (1981). How the zebra got its stripes – biting flies as selective agents in the evolution of zebra coloration. J ent Soc S Afr, 44, 351–358.
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Gillan DJ, Premack D, & Woodruff G. (1981). Reasoning in the chimpanzee: I. Analogical reasoning. J. Exp. Psychol.: Anim. Behav. Process., 7, 1.
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Saigo, S. (1981). A transient spin-state change during alkaline isomerization of ferricytochrome c. J Biochem (Tokyo), 89(6), 1977–1980.
Abstract: Kinetic difference spectra during the alkaline isomerization of ferricytochrome c were obtained by the pH-jump method in the range of 540 to 655 nm. The spectrum of the transient intermediate, which appears during the course of the isomerization, was reproduced from the spectra. The intermediate showed an intense absorption band at 600 nm, indicating that it is a high spin or mixed spin species. This is in contrast to the stable neutral and alkaline forms which are low spin species. The transient spin-state change during the isomerization was also observed upon rapid oxidation of ferrocytochrome c at alkaline pH.
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