TY - RPRT TI - Changes in the chemistry of lakes and precipitation in high-elevation national parks in the western United States, 1985–1999 AU - David W. Clow AU - James O. Sickman AU - Robert G. Striegl AU - David P. Krabbenhoft AU - John G. Elliott AU - Mark M. Dornblaser AU - David A. Roth AU - Donald H. Campbell PY - 2003 DO - 10.1029/2002wr001533 UR - https://pubs.usgs.gov/publication/70179840 ID - 70179840 ER -