1. The new face of Mars Author/Creator: Firsoff, V. A. 1912-1981. (Valdemar Axel) Publication/Creation: Thetford, Norfolk (England) : Ian Henry Publications, 1980 Resource Type: Book Access & Availability: Loading
2. The old moon & the new Author/Creator: Firsoff, V. A. 1912-1981. (Valdemar Axel) Publication/Creation: London : Sidgwick & Jackson, 1969 Resource Type: Book Access & Availability: Loading
3. Life beyond the earth : a study in exobiology Author/Creator: Firsoff, V. A. 1912-1981. (Valdemar Axel) Publication/Creation: New York : Basic Books, [1964] Resource Type: Book Access & Availability: Loading