TY - RPRT TI - Volcanogenic Sulfur on Earth and Io: Composition and Spectroscopy AU - J.S. Kargel AU - P. Delmelle AU - D.B. Nash PY - 1999 DO - 10.1006/icar.1999.6183 UR - https://pubs.usgs.gov/publication/70021275 ID - 70021275 ER -