Shagñay Rea, S. M., Arias Alemán, L. S., & Vaca Zambrano, S. E. (2020). He evaluation of the milk production curves of the Holstein Friesian cows at the Tunshi Espoch experimental station. Ciencia Digital, 4(1), 85-96. https://doi.org/10.33262/cienciadigital.v4i1.1070