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363 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced
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576 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

536 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

523 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

475 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

360 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

426 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

441 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

487 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced

missing page info first pub 1949 (editions)

nonfiction history science adventurous slow-paced

515 pages first pub 1949 (editions)

nonfiction history science adventurous slow-paced