This workshop brought together, for two and a half days, a divergent group of scientists (representing planetary geophysics, surface chemistry, remote sensing, field petrology and geochemistry, terrestrial igneous petrology ...

The materials on the following pages are from viewgraphs and information presented at a reunion of former astronauts held at the Johnson Space Center in August 1978. These briefing notes do not constitute a formal publication ...

The volume begins with a summary prepared by the conveners, Thomas R. McGetchin (Lunar and Planetary Institute) and Thomas B. McCord (University of Hawaii) and ends with a bibliography of volcanic gases and remote sensing.