Liberal, M.H.T. and Boughton, E. 1994. An attempt to improve bovine <i>Mycoplasmatales</i> primary isolation. Pesquisa Agropecuaria Brasileira. 29, 11 (Nov. 1994), 1789–1794. DOI:https://doi.org/10.1590/S1678-3921.pab1994.v29.4235.