TY  - RPRT
TI  - Geologic map of the El Malpais Instant Study Area and adjacent areas, Valencia County, New Mexico
AU  - C. H. Maxwell
PY  - 1981
DO  - 10.3133/mf1375a
UR  - https://pubs.usgs.gov/publication/mf1375A
ID  - mf1375A
ER  -