United Planets

missing page info first pub 1965 (editions)

fiction science fiction informative slow-paced

133 pages first pub 1967 (editions)

fiction science fiction adventurous fast-paced

190 pages first pub 1966 (editions)

fiction science fiction adventurous slow-paced

186 pages first pub 1976 (editions)

fiction science fiction adventurous challenging slow-paced

204 pages first pub 1978 (editions)

fiction science fiction adventurous reflective fast-paced

265 pages first pub 1967 (editions)

fiction science fiction challenging informative medium-paced

256 pages first pub 1967 (editions)

fiction science fiction adventurous challenging reflective medium-paced