References by Author or Types

R. J. Blumenschine, C. R. Peters, F. T. Masao, R. J. Clarke, A. L. Deino, R. L. Hay, C. C. Swisher, I. G. Stanistreet, et al.
Late pliocene Homo and hominid land use from western Olduvai Gorge, Tanzania
Science, 299(5610), 1217-1221, 2003

R. C. Walter , P. C. Manega , R. L. Hay , R. E. Drake , and G. H. Curtis
Laser-fusion 40Ar/39Ar dating of Bed I, Olduvai Gorge, Tanzania
Nature, 354, 145-149, 1991

M. D. Leakey and R. L. Hay
Pliocene footprints in the Laetolil Beds at Laetoli, northern Tanzania
Nature, 278(5702), 317-323, 1979
https://doi.org/10.1038/278317a0

M. D. Leakey , R. L. Hay , G. H. Curtis , R. E. Drake , M. K. Jackes , and T. D. White
Fossil hominids from the Laetolil Beds
Nature, 262(5568), 460-466, 1976
https://doi.org/10.1038/262460a0