Ramalho, Francisco de Sousa, José Valdênio Gonzaga, and José Roberto Bezerra Silva. 1993. “Method for Determining the Causes of Natural Mortality of the Cotton Boll Weevil”. Pesquisa Agropecuaria Brasileira 28 (8):877-87. https://doi.org/10.1590/S1678-3921.pab1993.v28.3950.