TY - RPRT TI - Watershed scaling effect on base flow nitrate, valley and ridge physiographic province AU - B.D. Lindsey AU - W.J. Gburek AU - G.J. Folmar PY - 2007 DO - 10.1111/j.1752-1688.2001.tb03625.x UR - https://pubs.usgs.gov/publication/70022803 ID - 70022803 ER -