William A. Geering. (2001). Manual on procedures for disease eradication by stamping out. Rome, Italy: FAO.
Παραπομπή Chicago StyleWilliam A. Geering. Manual On Procedures for Disease Eradication By Stamping Out. Rome, Italy: FAO, 2001.
Παραπομπή MLAWilliam A. Geering. Manual On Procedures for Disease Eradication By Stamping Out. Rome, Italy: FAO, 2001.
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