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68 pages first pub 1919 (editions)

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

nonfiction autobiography science informative medium-paced

112 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

120 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

92 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

68 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

100 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

100 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

122 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

84 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced

106 pages first pub 1919 (editions)

nonfiction autobiography science informative medium-paced