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224 pages first pub 1918 (editions)

nonfiction mathematics philosophy science challenging informative reflective slow-paced
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220 pages first pub 1918 (editions)

nonfiction mathematics philosophy science challenging informative reflective slow-paced

202 pages first pub 1918 (editions)

nonfiction mathematics philosophy science challenging informative reflective slow-paced

268 pages first pub 1918 (editions)

nonfiction mathematics philosophy science challenging informative reflective slow-paced

148 pages first pub 1918 (editions)

nonfiction mathematics philosophy science challenging informative reflective slow-paced

220 pages first pub 1918 (editions)

nonfiction mathematics philosophy science challenging informative reflective slow-paced