By Knowles, Malcolm
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By Bruce A. Campbell, Paula Walter McCandless, MSc Grad Dip Phys MCSP SRP FHEA (Senior Lecturer, School of Public Health and Clinical Sciences, University of Central Lancashire, Preston, UK)
By Sami Matar (Professor of Chemistry, King Fahd University of Petroleum and Minerals, Dharan, Saudi Arabia), Lewis F. Hatch