Scientists in 90 Minutes)

80 pages first pub 1997 (editions)

nonfiction biography science informative medium-paced

80 pages first pub 1997 (editions)

science challenging informative medium-paced

80 pages first pub 1997 (editions)

nonfiction biography science informative inspiring lighthearted medium-paced

80 pages first pub 1997 (editions)

science informative inspiring lighthearted medium-paced
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