While this book is older (no website addresses, just business names and addresses), it has been a great resource. However, since the web has changed so much since this book has come out, most of the businesses were just a quick google search away. I haven't even begun to really search through all of the information this book provided.
I think this author is pretty out of touch. Many of her suggestions are so contrary to American customs as to render them useless. I am planning a "green" wedding, but I am not prepared to invite the women guests to refrain from using tampons and switch to non-disposable menses receptacles. It just wouldn't fly in my family.