TY  - RPRT
TI  - Aggregates from natural and recycled sources; economic assessments for construction applications; a materials flow study
AU  - David R. Wilburn
AU  - Thomas G. Goonan
PY  - 1998
DO  - 10.3133/cir1176
UR  - https://pubs.usgs.gov/publication/cir1176
ID  - cir1176
ER  -