Most useful threads for enviro exam prep

[dimockman]

Hmmm.... it seems my favorite reference - Environmental Engineering, by Salvato, Nemerow, et. al, - has been updated to the 6th edition and is now a 3-volume set, about twice as expensive as before:

http://www.amazon.com/Environmental-Engine...1986&sr=1-2

I have the third edition. I would love to know what new content has been added since my edition was published.