5 Steps to a 5 AP Environmental Science, 2012-2013 Edition (5 Steps to a 5 on the Advanced Placement Examinations Series)
Linda Williams is a writer with expertise and experience in the fields of science, medicine, and space. She was a former lead scientist and technical writer for NASA, McDonnell Douglas, Wyle Labs, and Rice University. Williams is also author of Chemistry Demystified, Earth Science Demystified, and Environmental Science Demystified.