Meij Hs, M. J. (1980). Functional asymmetry in the motor system of the horse. S Afr J Sci, 76, 552–556.
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Meyer H,. (1980). Ein Beitrag zur Regulation der Futteraufnahme beim Pferd. Dtsch Tierärztl Wschr, 87, 401–424.
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Niekerk Van Hp,. (1980). Ethological studies within the man. J South Afr Vet Assoc 51, , 237–238.
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OKUDA Y et al,. (1980). Grazing behavior and heart rate of young thoroughbreds in pasture. Bull Equ Res Inst, 17, 8–20.
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Salter Re, H. J. (1980). Range relationships of feral horses with wild ungulates and cattle in western Alberta. J Range Mgmt, 33, 266–271.
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Salter Re, P. D. (1980). Determinants of mineral lick utilization by feral horses. Northwest Sci, 54, 109–118.
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Schlawe L,. (1980). Kritisches zur Nomenklatur und taxonomischen Beurteilung von Equus africanus. Equus, 2, 101–127.
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Tschanz B,. (1980). Sozialverhalten beim Camarguepferd – Paarungsverhalten und Herdenstruktur (Freilandaufnahmen).D 1318 Publ.
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WOLSKI TR et al,. (1980). Teh role of the senses in mare – foal recognition. Appl Anim Ethol, 6, 121–138.
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De Moraes Ferrari, E. A., & Todorov, J. C. (1980). Concurrent avoidance of shocks by pigeons pecking a key. J Exp Anal Behav., 30(3), 329–333.
Abstract: Three pigeons were studied on concurrent, unsignaled, avoidance schedules in a two-key procedure. Shock-shock intervals were two seconds in both schedules. The response-shock interval on one key was always 22 seconds, while the response-shock interval associated with the other key was varied from 7 to 52 seconds in different experimental conditions. Response rates on the key associated with the varied schedule tended to decrease when the response-shock interval length was increased. Responding on the key associated with the constant schedule was not systematically affected.
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