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Form SC 13G/A LANDAUER INC Filed by: VANGUARD GROUP INC Feb 10, 2017 09:54AM
Form SC 13G/A LANDAUER INC Filed by: VANGUARD GROUP INC Feb 10, 2016 12:46PM
Form SC 13G/A LANDAUER INC Filed by: VANGUARD GROUP INC Feb 10, 2015 02:11PM