@book{
international1991iaea,
title={Isotope Aided Studies on Goat and Sheep Production in the Tropics},
series={Panel Proceedings Series},
year={1991},
isbn={92-0-111091-X},
url={http://www.dgdingfa.net/publications/3731/isotope-aided-studies-on-goat-and-sheep-production-in-the-tropics},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}