Sobrinho, R.B. et al. 1991. Vertical distribution of eggs and larvae of the bollworm within the cotton plant. Pesquisa Agropecuaria Brasileira. 26, 11/12 (Oct. 1991), 1873–1878. DOI:https://doi.org/10.1590/S1678-3921.pab1991.v26.3537.