GESTATION LENGTH IN THE ASTURIANA DE LOS VALLES BEEF CATTLE BREED AND ITS RELATIONSHIP WITH BIRTH WEIGHT AND CALVING EASE* DURACIÓN DE LA GESTACIÓN EN LA RAZA BOVINA ASTURIANA DE LOS VALLES Y SU RELACIÓN CON EL PESO AL NACIMIENTO Y DIFICULTAD DE PARTOS*
作者： I. Fernández , I. Álvarez
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参考文章(18)
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