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missing duration info first pub 1919 (editions)

nonfiction autobiography science informative medium-paced
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108 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

208 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

2 hours, 45 minutes first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

132 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

92 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

160 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

156 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

110 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

142 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

104 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced