TY  - RPRT
TI  - Elevation contours of the bedrock surface, North Platte 1- by 2-degree Quadrangle, Nebraska, digitized from a published 1:250,000-scale geologic map
AU  - Ronald B. Zelt
PY  - 1995
DO  - 10.3133/ofr95330
UR  - https://pubs.usgs.gov/publication/ofr95330
ID  - ofr95330
ER  -