63482document3012SDP_221_-_STATISTIK_GUNAAN_DAN_EKONOMETRIK_SEPT.1999.pdfapplication/pdf8250142013-07-13 00:52:26http://eprints.usm.my/2280/1/SDP_221_-_STATISTIK_GUNAAN_DAN_EKONOMETRIK_SEPT.1999.pdf