@article{121329, note = {Three folded plates in pocket.}, author = {Downey, Joe S. and Dinwiddie, George A.,}, url = {http://library.usi.edu/record/121329}, title = {The regional aquifer system underlying the northern Great Plains in parts of Montana, North Dakota, South Dakota, and Wyoming--summary /}, publisher = {Dept. of the Interior, U.S. Geological Survey ;}, recid = {121329}, pages = {vii, 64 p.:}, address = {[Reston, Va.?] :}, year = {1988}, }