History of Refraction

	Revision 10 . . (edit) October 29, 2001 8:30 pm by (logged).192.137.xxx [fixed misspelling]
	Revision 9 . . (edit) October 28, 2001 12:20 am by DrBob [link to dispersion]
	Revision 7 . . October 3, 2001 10:26 pm by AxelBoldt

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