TY  - RPRT
TI  - A tapestry of time and terrain
AU  - J.F. Vigil
AU  - R.J. Pike
AU  - D. G. Howell
PY  - 2000
DO  - 10.3133/i2720
UR  - https://pubs.usgs.gov/publication/i2720
ID  - i2720
ER  -