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Palme, R., Fischer, P., Schildorfer, H., & Ismail, M. N. (1996). Excretion of infused 14C-steroid hormones via faeces and urine in domestic livestock. Animal Reproduction Science, 43(1), 43–63.
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Piccione, G., Caola, G., & Refinetti, R. (2005). Temporal relationships of 21 physiological variables in horse and sheep. Comp Biochem Physiol A Mol Integr Physiol, 142(4), 389–396.
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Pillot, M. - H., & Deneubourg, J. - L. (2010). Collective movements, initiation and stops: Diversity of situations and law of parsimony. Behav. Process., 84(3), 657–661.
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Pitchford, R. J., Visser, P. S., du Toit, J. F., de Pienaar, U. V., & Young, E. (1973). Observations on the ecology of Schistosoma mattheei Veglia & Le Roux, 1929, in portion of the Kruger National Park and surrounding area using a new quantitative technique for egg output. J S Afr Vet Assoc, 44(4), 405–420.
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Rumiantsev, S. N. (1973). [Biological function of Clostridium tetani toxin (ecological and evolutionary aspects)]. Zh Evol Biokhim Fiziol, 9(5), 474–480.
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Sanga, U., Provenza, F. D., & Villalba, J. J. (2011). Transmission of self-medicative behaviour from mother to offspring in sheep. Anim. Behav., 82(2), 219–227.
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Satorov, S. S., & Orzuev, M. I. (1987). [Frequency of the isolation of staphylococci from domestic animals and strain identification]. Zh Mikrobiol Epidemiol Immunobiol, (12), 37–39.
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Shalaby, A. M. (1969). Host-preference observations on Anopheles culicifacies (Diptera: Culicidae) in Gujarat State, India. Ann Entomol Soc Am, 62(6), 1270–1273.
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Shoshani, J., Kupsky, W. J., & Marchant, G. H. (2006). Elephant brain. Part I: gross morphology, functions, comparative anatomy, and evolution. Brain Res Bull, 70(2), 124–157.
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Sibbald, A. M., Elston, D. A., Smith, D. J. F., & Erhard, H. W. (2005). A method for assessing the relative sociability of individuals within groups: an example with grazing sheep. Appl. Anim. Behav. Sci., 91(1-2), 57–73.
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