Nitrogen flow in pig production and environmental consequences : proceedings of the first international symposium on nitrogen flow in pig production and environmental consequences, Wageningen (Doorwerth), the Netherlands, 8-11 June 1993
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書誌事項
Nitrogen flow in pig production and environmental consequences : proceedings of the first international symposium on nitrogen flow in pig production and environmental consequences, Wageningen (Doorwerth), the Netherlands, 8-11 June 1993
(EAAP publication, no.69)
Pudoc Scientific Publishers, 1993