págs. 445-489
págs. 490-536
Into the well of sacrifie-I: return to the sacred cenote
págs. 540-549
Into the well of sacrifice-II: treasure hunt in the deep past
págs. 550-561
Exploring 1,750,000 years into man's past: a noted british archeologist tells of dramatic discoveries at Olduvai Gorge
págs. 564-589
A clock for the ages: potassium-argon
págs. 590-592
© 2001-2024 Fundación Dialnet · Todos los derechos reservados