title: Mars/viking 25th Anniversary Tribute. Viking redux: Viking success and lessons for the future.
authors.affiliation: Lockheed Martin Astronautics, Denver, CO, USA.
authors.forename: B C
authors.initials: BC
authors.lastname: Clark
mesh_terms: D001325:Autobiographies as Topic; D018559:Exobiology / Q000266:history; D005118:Extraterrestrial Environment / Q000737:chemistry; D005844:Geology / Q000266:history; D049673:History, 20th Century; D018535:Mars; D012987:Soil / Q000032:analysis; D013026:Space Flight / Q000266:history* / Q000295:instrumentation; D018531:Spacecraft / Q000266:history* / Q000295:instrumentation; D014481:United States; D018557:United States National Aeronautics and Space Administration / Q000266:history*
chemical_list: D012987:Soil