TY - RPRT TI - Evaluation of near-infrared spectra for detecting ammonium minerals at Shoshone Geyser Basin, Yellowstone National Park, Wyoming AU - M. D. Krohn PY - 1993 DO - 10.3133/ofr93293 UR - https://pubs.usgs.gov/publication/ofr93293 ID - ofr93293 ER -