TY  - RPRT
TI  - Soil relative dating of moraine and outwash-terrace sequences in the northern part of the upper Arkansas Valley, central Colorado, U.S.A.
AU  - Alan R. Nelson
AU  - Ralph R. Shroba
PY  - 1998
DO  - 10.2307/1552007
UR  - https://pubs.usgs.gov/publication/70020596
ID  - 70020596
ER  -