TY  - RPRT
TI  - Map showing relative swelling-pressure potential of geologic materials in the Parker quadrangle, Arapahoe and Douglas Counties, Colorado
AU  - J. O. Maberry
PY  - 1972
DO  - 10.3133/i770d
UR  - https://pubs.usgs.gov/publication/i770D
ID  - i770D
ER  -