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19 августа 2011 г.
Twentieth-Century Science, 2007. - 284 p. The 20th century has witnessed an explosive growth in science and technology— more scientists are alive today than have lived during the entire course of earlier human history. New inventions including spaceships, computer chips, lasers, and recombinant DNA have opened pathways to new fields such as space science, biotechnology, and nanotechnology. Modern seismographs and submarines have given earth and...