Rana adnan baquir Kamal aldeen Cfia - Turbidimetrie and photometric determination of vitamins B1,B2 folic acid using leds as a source of irradiation and solar cells as an energy transducer in asingle instrument / - 149 Leaves cd Subjects--Topical Terms: Vitamins chemistry Dewey Class. No.: 547.74 / R185 2018