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14 hours, 41 minutes first pub 1986 (editions)

nonfiction science informative reflective slow-paced
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missing page info first pub 1986 (editions)

nonfiction science informative reflective slow-paced

488 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

358 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

470 pages first pub 1986 (editions) user-added

nonfiction science informative reflective slow-paced

332 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

358 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

332 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

375 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

374 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced

332 pages first pub 1986 (editions)

nonfiction science informative reflective slow-paced