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Segrè, Emilio
(Encyclopedia) Segrè, Emilio, 1905–89, Italian-American physicist, Ph.D. Univ. of Rome, 1928. Segrè was a professor at the Univ. of Rome (1932–36), a researcher at the Univ. of California, Berkeley (…Paston Letters
(Encyclopedia) Paston Letters, collection of personal and business correspondence, mostly among members of the Paston family of Norfolk, England. The letters cover the years from 1422 to 1529,…Pérez Molina, Otto
(Encyclopedia) Pérez Molina, Otto, 1950–, Guatemalan army officer and politician, b. Guatemala City. Pérez rose through the officer ranks to become a general, leading troops and then military…Adrian I, pope
(Encyclopedia) Adrian I, d. 795, pope (772–95), a Roman; successor of Stephen IV. At Adrian's urging, Charlemagne crossed the Alps and defeated the Lombard king, Desiderius, who had annexed papal…navigation satellite
(Encyclopedia) navigation satellite, artificial satellite designed expressly to aid the navigation of sea and air traffic. Early navigation satellites, from the Transit series launched in 1960 to the…Rh factor
(Encyclopedia) Rh factor, protein substance present in the red blood cells of most people, capable of inducing intense antigenic reactions. The Rh, or rhesus, factor was discovered in 1940 by K.…Nansen International Office for Refugees
(Encyclopedia) Nansen International Office for Refugees, worldwide agency est. 1931 by the League of Nations to work on behalf of refugees. It was named for Fridjof Nansen, head of the League's High…diminishing returns, law of
(Encyclopedia) diminishing returns, law of, in economics, law stating that if one factor of production is increased while the others remain constant, the overall returns will relatively decrease…rabbi
(Encyclopedia) rabbi [Heb.,=my master; my teacher], the title of a Jewish spiritual leader. The role of the rabbi has undergone a number of transformations. In the Talmudic period, rabbis were…National Petroleum Reserve
(Encyclopedia) National Petroleum Reserve, area, c.23 million acres (9.32 million hectares), Alaska North Slope, situated W of Prudhoe Bay and the Arctic National Wildlife Refuge. The reserve, which…Trending
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