V Mary John. (1992). Parecentage control in cattle using blood types. College of veterinary and animal sciences.
Παραπομπή Chicago StyleV Mary John. Parecentage Control in Cattle Using Blood Types. College of veterinary and animal sciences, 1992.
Παραπομπή MLAV Mary John. Parecentage Control in Cattle Using Blood Types. College of veterinary and animal sciences, 1992.
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