Here is a very reasonably priced booklet.
http://www.nraes.org/nra_order.taf?_...oknum=nraes-22

Some other information...
http://energyideas.org/formats/defau...h,t,1,f,1,2343

http://www.intracen.org/Tdc/Export%2.../pafa01eng.pdf

http://www.icastorage.com/pdfs/Adver...20Ethylene.pdf

http://www.ipenz.org.nz/ipenz/public...eral/6chen.pdf

http://www.techstreet.com/cgi-bin/de...uct_id=1051107

Hope these are helpful.