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499 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced
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360 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

576 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

missing page info first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

672 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

698 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

584 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

missing page info first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

416 pages first pub 1991 (editions) user-added

nonfiction history science adventurous informative reflective slow-paced

440 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced

512 pages first pub 1991 (editions)

nonfiction history science adventurous informative reflective slow-paced