@article{233882, note = {Part of illustrative matter in pocket.}, author = {Ruppel, Edward Thompson,}, url = {http://library.usi.edu/record/233882}, title = {Geology of pre-Tertiary rocks in the northern part of Yellowstone National Park, Wyoming,}, publisher = {U.S. Govt. Print. Off.,}, recid = {233882}, pages = {vi, 66 p. :}, address = {Washington,}, year = {1972}, }