Excerpt - page 2: "search for life on Mars was the primary purpose of l'i/ o s I and 2 from the United States, which landed in 19-6. In that year I was well into my career as a palaeontologist"
Excerpt - Back Matter: " ... 273: 448 (1996); and Richard A. Kerr, Science 276: 703-4 (1997) 7 The search for life on Mars and Europa: Kathy A. Svitil, Discover 18: 86-8 (May ... "