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192 pages first pub 1985 (editions)

nonfiction philosophy science informative reflective medium-paced
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196 pages first pub 1985 (editions)

nonfiction philosophy science informative reflective medium-paced

208 pages first pub 1985 (editions)

nonfiction philosophy science informative reflective medium-paced

108 pages first pub 1985 (editions)

nonfiction philosophy science informative reflective medium-paced

192 pages first pub 1985 (editions)

nonfiction philosophy science informative reflective medium-paced

208 pages first pub 1985 (editions)

nonfiction philosophy science informative reflective medium-paced