TY - RPRT TI - Hydrogen gas monitoring at Long Valley Caldera, California AU - K.A. McGee AU - T. J. Casadevall AU - M. Sato AU - A. J. Sutton AU - M. D. Clark PY - 1982 DO - 10.3133/ofr82930 UR - https://pubs.usgs.gov/publication/ofr82930 ID - ofr82930 ER -