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 141.218.36.62 (talk) at 22:08, 11 August 2013 (rm - unconfirmed "17"?). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.