[1]
de Freitas, A.R. 1991. The use of 2 x 2 contingency tables in animal experimentation. Pesquisa Agropecuaria Brasileira. 26, 8 (Aug. 1991), 1283–1292. DOI:https://doi.org/10.1590/S1678-3921.pab1991.v26.3466.