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For more than 40 years, the McGraw-Hill Encyclopedia of Science and Technology has been the first source readers around the world have turned to when starting research on any major scientific topic. With more than 7,000 articles written by leaders in their fields - including 30 Nobel Prize winners - the Encyclopedia is famed for the scope and quality of its content. Students, professionals researching areas outside their own specialties, "lifelong learners" - any reader with only modest background in the sciences - will benefit from the ease of access to information, the clarity of the text, and the 12,000 specially prepared illustrations. The new Ninth Edition carries on this tradition. Thoroughly updated, its 20 volumes contain 15,000+ pages and 7,100 articles, many new, rewritten, or revised. Using the 500 page analytical index, the topical index, or the Study Guides, readers will find the information they want on all the hottest areas of science and engineering: astronomy and space science; computational chemistry; environmental science; forensic science; information technology and communications; intelligent manufacturing; molecular biology and biotechnology; neuroscience; theoretical and applied physics, to name just a few. 61,000 cross references and 21,000 bibliography entries enable the reader to see the connections in the more than 90 disciplines covered and to continue their studies in greater depth.With the breathtaking pace at which science and technology are advancing, no science reference collection can afford to be without this latest edition of the McGraw-Hill Encyclopedia of Science and Technology. - from Amzon