Download or read book Summaries of Technical Reports Volume X written by and published by . This book was released on 1980 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Circular written by and published by . This book was released on 1933 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summaries of Technical Reports Volume IX written by and published by . This book was released on 1980 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Geological Survey in Alaska written by Thomas M. Cronin and published by . This book was released on 1981 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Geological Survey in Alaska written by and published by . This book was released on 1981 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Circular written by and published by . This book was released on 1983 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pesticides Abstracts written by and published by . This book was released on 1979 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Geological Survey in Alaska Accomplishments During written by and published by . This book was released on 1979 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Resources in Education written by and published by . This book was released on 1981-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Abstracts for Policy Analysis written by and published by . This book was released on 1981 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cumulated Index Medicus written by and published by . This book was released on 1980 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Science of Photomedicine written by J.D. Regan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the history of photomedicine dates back thousands of years, with even preliterate cultures appreciating the healing properties of sunlight, for many workers in the discipline photomedicine is associated with the observation about 100 years ago of Niels Finsen, a Danish physician. Finsen recognized that people with tuberculosis who lived in Norway and who had very little exposure to sunlight often developed facial lesions (lupus vulgaris) which would decrease and sometimes disappear during the summer months. This very observant physician reasoned that artificial light ought to produce the same effect as sunlight and began utilizing the radiation from the newly available carbon arc. At first, he used a glass lens to concentrate the radiation, but since this produced considerable burning, he replaced this with a hollow glass lens filled with water. However, while this reduced the heat burns, it did not actually duplicate the effect of direct sunlight. Finally, using a hollow lens filled with water but equipped with quartz windows, Finsen was able to imitate, even improve upon, the effect of sunlight. As a result, lupus vulgaris was practically eliminated from the Scandinavian countries.

Download or read book Bibliography of United States Landslide Maps and Reports written by Christopher S. Alger and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book National Library of Medicine Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: