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298 pages first pub 1988 (editions)

nonfiction essays science informative lighthearted medium-paced
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256 pages first pub 1988 (editions)

nonfiction essays science informative lighthearted medium-paced

256 pages first pub 1988 (editions)

nonfiction essays science informative lighthearted medium-paced

missing duration info first pub 1988 (editions)

nonfiction essays science informative lighthearted medium-paced

330 pages first pub 1988 (editions)

nonfiction essays science informative lighthearted medium-paced

255 pages first pub 1988 (editions)

nonfiction essays science informative lighthearted medium-paced