TY - RPRT TI - Test drilling and data collection in the Calaveras County portion of the Eastern San Joaquin Groundwater Subbasin, California, December 2009-June 2011 AU - Loren F. Metzger AU - John A. Izbicki AU - Joseph M. Nawikas PY - 2012 DO - 10.3133/ofr20121049 UR - https://pubs.usgs.gov/publication/ofr20121049 ID - ofr20121049 ER -