TY  - GEN
ED  - 	United States.
ED  - United States.
TI  - Preliminary guidance for estimating erosion on areas disturbed by surface mining activities in the interior western United States: interim final report
U1  - 631.450973 23
PY  - 1977///
CY  - 	Denver, Colo.
PB  - Soil Conservation Service
KW  - Soil erosion
KW  - West (U.S.)
KW  - Measurement
KW  - Soil conservation
KW  - Strip mining
KW  - Environmental aspects
ER  -