1. Oceanic concentrations of228radium;Moore;Earth Planet. Sci. Letters,1969
2. Measurement of Ra228 and Th228 in seawater;Moore;J. Geophys. Res.,1969
3. The distribution of radium-228 in the world ocean;Kaufman,1972
4. GEOSECS intercalibration and test cruise;Spencer;Woods Hole Oceanographic Institution Reference No. 70-63,1970
5. An application of natural radon to problems in ocean circulation;Broecker,1965