This is a great link to major UN and other resources for best practices in clean production and sustainable business. Besides excellent overviews of production and environmental topics, many of the manuals and guides here are really deep engineering and complete technical books. Big downloads!
http://www.uneptie.org/pc/cp/library/training/howtoCPC/manual_cdrom/CPlinks/html/sectors.htm
Many other resources like these are included in the Sustainable Business CD Library available via www.cleanerproduction.com.
Send it on!
Burton Hamner
http://www.CleanerProduction.Com