TY - RPRT TI - Assessment of total nitrogen and total phosphorus in selected surface water of the National Park Service Northern Colorado Plateau Network, Colorado, Utah, and Wyoming, from 1972 through 2007 AU - Juliane B. Brown AU - David P. Thoma PY - 2012 DO - 10.3133/sir20125043 UR - https://pubs.usgs.gov/publication/sir20125043 ID - sir20125043 ER -