TY  - RPRT
TI  - Calcic soils and calcretes in the southwestern United States
AU  - George Odell Bachman
AU  - Michael N. Machette
PY  - 1977
DO  - 10.3133/ofr77794
UR  - https://pubs.usgs.gov/publication/ofr77794
ID  - ofr77794
ER  -