title: Mars/Viking 25th Anniversary Tribute. The emerging face of  Mars: a synthesis from Viking to Mars Global Surveyor.
authors.affiliation: NASA Headquarters, Washington, DC, USA. jgarvin@hq.nasa.gov
authors.forename: J B
authors.initials: JB
authors.lastname: Garvin
mesh_terms: D018559:Exobiology / Q000266:history; D005118:Extraterrestrial Environment; D049673:History, 20th Century; D049674:History, 21st Century; D018535:Mars; 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*