TY  - RPRT
TI  - Stratigraphy of reference sections in the Popotosa Formation, Socorro County, New Mexico
AU  - Sigrid Asher-Bolinder
PY  - 1988
DO  - 10.3133/b1800
UR  - https://pubs.usgs.gov/publication/b1800
ID  - b1800
ER  -