Wikipedia: History of Three-age system

Difference (from prior major revision) (author diff)

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The three-age system is a system of classifying human prehistory into three consecutive time periods:

The three-age system is a system of classifying human prehistory into three consecutive time periods, named after the characteristic tool-making technology of the era:

	Revision 3 . . December 13, 2001 6:56 am by (logged).253.39.xxx ['named after tool-making tech']
	Revision 2 . . (edit) December 13, 2001 6:54 am by (logged).253.39.xxx [copyedit]
	Revision 1 . . December 13, 2001 5:57 am by Hagedis