TY  - RPRT
TI  - Slide show on gravel deposit models and measuring aggregate quality, Front Range urban corridor, Colorado
AU  - David A. Lindsey
AU  - William H. Langer
PY  - 1998
DO  - 10.3133/ofr98332
UR  - https://pubs.usgs.gov/publication/ofr98332
ID  - ofr98332
ER  -