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196 pages first pub 1980 (editions)

nonfiction science fiction adventurous funny informative medium-paced
Other editions (4)
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201 pages first pub 1982 (editions)

nonfiction science fiction adventurous funny informative medium-paced

missing page info first pub 1980 (editions)

nonfiction science fiction adventurous funny informative medium-paced

224 pages missing pub info (editions)

nonfiction science fiction adventurous funny informative medium-paced

208 pages first pub 1991 (editions)

nonfiction science fiction adventurous funny informative medium-paced