54739document2543KAA_501_-_QUALITY_CONTROL_IN_CHEMISTRY_NOV_05_-_BI.pdfapplication/pdf3871232013-07-13 00:48:21http://eprints.usm.my/1821/1/KAA_501_-_QUALITY_CONTROL_IN_CHEMISTRY_NOV_05_-_BI.pdf