Appearance of an enigmatic Pb source in South America around 2000 BP: Anthropogenic vs natural origin

1. Kamenov, G.D.
2. Escobar, J.
3. Elliott Arnold, T.
4. Pardo-Trujillo, A.
5. Gangoiti, G.
6. Hoyos, N.
7. Curtis, J.H.
8. Bird, B.W.
9. Isabel Velez, M.
10. Vallejo, F.
11. Trejos-Tamayo, R.