Velapoldi, R.A. A fluorescence standard reference material : quinine sulfate dihydrate / R.A. Velapoldi and K.D. Mielenz - Washingtion : United States Government Printing Office, 1980 - 122 p. ; 28 cm. Issued January 1980 Subjects--Topical Terms: Fluorescencequinine sulfate dihydrate Dewey Class. No.: 535.352