Vertical economy, interchange, and social change during the formative period /

by Quattrin, Dale W.
Published 2001

Las sociedades prehispánicas del Alto Magdalena /

by Drennan, Robert D. 1947-, Drennan, Robert D. 1947-
Published 2000

Regional settlement patterns = Patrones de asentamiento regionales /

by Alarcón Pereira, Néstor Helman
Published 2006