Reproductive lifetime of sows in relation to economy of production von Kroes, Y, Van Male, J.P

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Reproductive lifetime of sows in relation to economy of production von Kroes, Y, Male, J.P. van

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Sow and litter recording procedures. Report of a working party of the E.A.A.P. commission on pig production von Sundgren, P.E, Van Male, J.P, Aumaitre, A, Kalm, E, Nielsen, H.E

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