TY  - RPRT
TI  - Well installation and documentation, and ground-water sampling protocols for the pilot National Water-Quality Assessment Program
AU  - M. A. Hardy
AU  - P.P. Leahy
AU  - W.M. Alley
PY  - 1989
DO  - 10.3133/ofr89396
UR  - https://pubs.usgs.gov/publication/ofr89396
ID  - ofr89396
ER  -