66868document3193EBS_432-3_ENVIRONMENTAL_CHEMISTRY_FOR_ENGINEERING_PRACTICE_APRIL-MAY_06.pdfapplication/pdf1948152013-07-13 00:54:06http://eprints.usm.my/2460/1/EBS_432-3_ENVIRONMENTAL_CHEMISTRY_FOR_ENGINEERING_PRACTICE_APRIL-MAY_06.pdf