Freitas, Moacyr G., Hélio M.A. Costa, and José D. Lima. 2014. “Evaluation of the Intensity of Helminth Infection of Calves Using Equations of Regression”. Pesquisa Agropecuaria Brasileira 8 (6):25-29. https://doi.org/10.1590/S1678-3921.pab1973.v8.17351.