1. Uranium content of the oceanic upper mantle;Aumento;Earth Planet. Sci. Lett.,1971
2. Uranium and thorium in alkalic rocks from the carbonatite volcano Oldoinyo Lengai (Tanzania);Dawson;Chem. Geol.,1970
3. Aspects of the geochemistry of kimberlites from the Premier Mine, and other selected South African occurrences with particular reference to the rare earth elements;Fesq,1975
4. U.S. Geological Survey standards;Flanagan;Geochim. Cosmochim. Acta,1969
5. The delayed neutron technique as a rapid and precise method for the determination of uranium and thorium in rocks and minerals;Gale,1967