Duck Populations and Kill: an Evaluation of Some Waterfowl Regulations in Illinois. Illinois Natural History Survey Bulletin, Champaign, IL, v. 23, n. 1-5, p. 327–372, 1944. DOI: 10.21900/j.inhs.v23.200. Disponível em: https://iopn.library.illinois.edu/journals/inhs/article/view/200.. Acesso em: 1 may. 2024.