PHILIPPE GONTIER / EURELIOS / SCIENCE PHOTO LIBRARY PHILIPPE GONTIER / EURELIOS / SCIENCE PHOTO LIBRARY
Paper preservation research. Technician with samples of paper used for preservation tests. The paper sheets are kept in a clear container within which conditions such as temperature and humidity can be controlled. This allows the precise effects of microscopic organisms on the paper to be determined. This research will discover the optimum conditions at which books should be kept to prevent deterioration. Photographed at the National Library of France in Paris.
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