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Book Creator is undergoing changes
Due to severe issues with our existing system, the Book Creator will no longer support saving a book as a PDF for a short period of time. We are working hard to replace our system and re-enable PDFs within the Book Creator.
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While the Book Creator PDF rendering is being replaced, you can try Download as PDF from the sidebar tools for individual articles.
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Return to Dictionary:International Geomagnetic Reference Field (IGRF).