TY - RPRT TI - A combined-network approach for compilation, evaluation, and analysis of precipitation-chemistry data for the upper Ohio River Valley and lower Great Lakes region, 1976-85 AU - Donna N. Myers PY - 1991 DO - 10.3133/wri914003 UR - https://pubs.usgs.gov/publication/wri914003 ID - wri914003 ER -