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445 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced
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380 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced

456 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced

384 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced

384 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced

384 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced

missing duration info first pub 1980 (editions)

nonfiction nature reference informative medium-paced

missing page info first pub 1980 (editions)

nonfiction nature reference informative medium-paced

384 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced

304 pages first pub 1980 (editions)

nonfiction nature reference informative medium-paced