Reference, Encyclopedias & Subject Guides, History & Philosophy, Science & Mathematics, Encyclopedias 

* The most widely used science reference of its kind * More than 7,000 concise articles covering more than 90 disciplines of science and technology, all in one volume * Based on the content of the world-respected McGraw-Hill Encyclopedia of Science & Technology, 9th Edition * More than 1600 two-color illustrations * Features numerous cross-referenences, an extensive index, and bibliographies * Appendix with biographical listings of important scientists, listings of scientific symbols and units, mathematical notations, fundamental concepts, and more * Extensively updated with 1500 new and rewritten articles * Includes coverage of the hottest areas of science and technology, including biomedical science, chemistry, cosmology, information science, environmental science, nanotechnology, and theoretical physics - from Amzon