I have found this book to be an invaluable resource for information on acoustics
and almost everything else about our hobby. Handbook for Sound Engineers, The New Audio Cyclopedia. Here is a link to comments about the book.
http://www.windwire.com/wireless/asinsearch_0240804546.html This would be a good thread to turn into a sticky so that resources on the subject would be easy to find. Scotty