@book{bhlitem20812, title = {Field Museum of Natural History bulletin }, volume = {v. 51 (1980)}, copyright = {In copyright. Digitized with the permission of the Chicago Field Museum. For information contact dcc@library.uiuc.edu.}, url = {https://www.biodiversitylibrary.org/item/20812}, note = {https://www.biodiversitylibrary.org/bibliography/169367}, publisher = {[Chicago, Ill.], The Museum, [1972]-©1990}, author = {Field Museum of Natural History.}, year = {1980}, pages = {322}, keywords = {Natural history|Periodical|Periodicals|Science}, }