TY - RPRT TI - Isopleth maps showing regional variations in pH of stream water and ground water in relation to geologic setting and known mineral deposits, Glens Falls 1° x 2° quadrangle, New York, Vermont, and New Hampshire AU - K. C. Watts PY - 1991 DO - 10.3133/i2161a UR - https://pubs.usgs.gov/publication/i2161A ID - i2161A ER -