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Hace 18 horas · Regularly scheduled electronic broadcasts began in April 1938 in New York (to the second week of June, and resuming in August) and Los Angeles. "Telecasts Here and Abroad," The New York Times, April 24, 1938, Drama-Screen-Radio section, p. 10; " Early Birds ," Time, June 13, 1938; "Telecasts to Be Resumed," The New York Times, Aug. 21, 1938 ...
Hace 18 horas · Erdős in 1992. Paul Erdős (1913–1996) was a Hungarian mathematician. He considered mathematics to be a social activity and often collaborated on his papers, having 511 joint authors, many of whom also have their own collaborators.
