@book{bhlitem56022, title = {Illinois biological monographs }, volume = {v.12 (1929)}, copyright = {In copyright. Digitized with permission of the University of Illinois Board of Trustees. Contact dcc@library.uiuc.edu for information.}, url = {https://www.biodiversitylibrary.org/item/56022}, note = {https://www.biodiversitylibrary.org/bibliography/3937}, publisher = {Urbana, Univ. of Illinois Press, }, author = {University of Illinois (Urbana-Champaign campus) and University of Illinois at Urbana-Champaign.}, year = {1929}, pages = {486}, keywords = {Biologie|Biology|Periodical|Periodicals}, }