History of Free-running sleep

	Revision 3 . . (edit) August 10, 2001 11:39 pm by Piotr Wozniak
	Revision 2 . . August 10, 2001 11:31 pm by Janet Davis [Clarified prose. (Thanks for writing about sleep!)]
	Revision 1 . . August 10, 2001 11:14 pm by Piotr Wozniak [def]

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