Geological background to fossil man : recent research in the Gregory Rift Valley, East Africa
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The American Association of Petroleum Geologists |
Springer-Verlag |
Academic Press |
Oxford University Press |
Longmans, Green |
A.A. Balkema, Distributed in the U.S.A. & Canada by M.B.S. |
Harvard University Press |
George Allen & Unwin |
the University Press |
W. A. Benjamin |
Hutchinson Ross Pub. Co, Distributed worldwide by Van Nostrand Reinhold Co. |