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Current edition

456 pages paperback 1980 user-added

nonfiction science informative inspiring reflective medium-paced
Other editions (56)
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364 pages hardcover 1980

nonfiction science informative inspiring reflective medium-paced

496 pages paperback 1980 user-added

nonfiction science informative inspiring reflective medium-paced

528 pages 1980

nonfiction science informative inspiring reflective medium-paced

336 pages paperback 1980 user-added

nonfiction science informative inspiring reflective medium-paced

570 pages paperback 1980

nonfiction science informative inspiring reflective medium-paced

324 pages paperback 1980

nonfiction science informative inspiring reflective medium-paced

368 pages paperback 1980

nonfiction science informative inspiring reflective medium-paced

719 pages 1980

nonfiction science informative inspiring reflective medium-paced

400 pages 1980

nonfiction science informative inspiring reflective medium-paced

647 pages paperback 1980

nonfiction science informative inspiring reflective medium-paced