- Take an Extra 30% Off Any Book: Use promo code HOLIDAY30 at checkout to get an extra 30% off any book for a limited time. Excludes Kindle eBooks and Audible Audiobooks. Restrictions apply. Learn more.
I am writing to report that I was very satisfied with this company. They sent the book on time even before the semester started. Read morePublished on September 25, 2011 by Justin
very informational but a bit dry. This book was required for my Air Quality class in my MPH program. It's a text book and gives you the information that you will need. Read morePublished on February 28, 2011 by T. Davis