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• Single copies of documents may be printed out for private study or research or teaching purposes.
• Illustrations and short extracts of documents may be reproduced if the source is acknowledged, authors give permission and the publisher (Institute of Physics) is notified.
• Documents may be photocopied for internal or personal use or distribution amongst a specific class of pupils in an educational setting.  If further photocopying is required you should seek permission from your national copyright clearance centre.
• Where specific authorisation is given in connection with specific documents.

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