1. Pliocene/Pleistocene formations in the lower Omo basin, southern Ethiopia;de Heinzelin;Quaternaria,1970
2. Geomagnetic reversals;Cox;Science,1969
3. Review of the development of the geomagnetic polarity time scale and discussion of prospects for its finer definition;Watkins;Geol. Soc. Am. Bull.,1972
4. Radiometric dating of sedimentary formations in the lower Omo Valley, Ethiopia;Brown,1972
5. F.H. Brown and W.P. Nash, Radiometric dating and tuff mineralogy of Omo group deposits, in: Earliest Man and Environments in the Lake Rudolf Basin: Stratigraphy, Paleoecology and Evolution, Y. Coppens, F.C. Howell, G. L1. Isaac and R.E.F. Leakey, eds. (University of Chicago Press, Chicago) in press.