More ideas from jose
matriz gestion del tiempo

matriz gestion del tiempo

CULTURAS NEOLÍTICAS EUROPEAS

Early Neolithic Cultures in Europe from c. 6000 BCE to 5000 BCE. (Click map to see more Maps of Neolithic and Bronze Age migrations in Europe and the Middle East)

Google+

Google+

Evolución humana

Evolución humana

Average Flow of Continental US Rivers (in cfs)

Rivers in the continental United States drawn with line width proportional to flow rate.