TY  - RPRT
TI  - Environmentalism and natural aggregate mining
AU  - Lawrence J. Drew
AU  - William H. Langer
AU  - Janet Somerville Sachs
PY  - 2002
DO  - 10.1023/a:1014283519471
UR  - https://pubs.usgs.gov/publication/70024049
ID  - 70024049
ER  -