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ZAYAN, R., DOYEN, J. and DUNCAN, I.J.H. (1983) Social and space requirements for hens in battery cages. In: Farm Animal Housing and Welfare (Baxter, S.H., Baxter, M.R. and MacCormack, J.A.C., Eds), Martinus Nijhoff, The Hague, pp. 67-90
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(1983)
Farm Animal Housing and Welfare
, pp. 67-90
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Zayan, R.1
Doyen, J.2
Duncan, I.J.H.3
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