http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Comets and the Origin and Evolution of Life
edited by Paul J. Thomas, Roland Dean Hicks, Christopher F. Chyba, Christopher P. McKay
Extraterrestrial Physics, Space Sciences
Advances in Astrobiology and Biogeophysics