Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
This is an old revision of this page, as edited by Lobizón (talk | contribs) at 02:14, 5 September 2005 (Moved main article to "Yacimientos Petro...", replaced with redirect). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.