TY  - RPRT
TI  - Cautions and suggestions for geochemical sampling in fractured rock
AU  - Allen M. Shapiro
PY  - 2007
DO  - 10.1111/j.1745-6592.2002.tb00764.x
UR  - https://pubs.usgs.gov/publication/70211216
ID  - 70211216
ER  -