On time scales and “synchronic” variability in the archaeology of human origins: short-term technological variations at SHK (Olduvai Gorge, Tanzania)

1. Diez-Martín, F.
2. Fraile-Márquez, C.
3. Duque-Martínez, J.
4. Sánchez-Yustos, P.
5. de Francisco, S.
6. Baquedano, E.
7. Mabulla, A.
8. Domínguez-Rodrigo, M.