@article{178821, note = {One col. map on folded leaf in pocket.}, author = {Toulmin, Priestley. and Hammarstrom, Jane Marie.}, url = {http://library.usi.edu/record/178821}, title = {Geology of the Mount Aetna volcanic center, Chaffee and Gunnison Counties, Colorado : a description of a deeply eroded mid-Tertiary volcano on the southern fringes of the Mount Princeton batholith in the Sawatch Range /}, publisher = {U.S. G.P.O. ;}, recid = {178821}, pages = {v, 44 p. :}, address = {Washington :}, year = {1989}, }