Here are two more links as to composition.
One is so small you are best printing it out, but readable in print (just) and interesting.
The other is technical but does illustrate the huge difference between the best and worst as to the oleic acid and linoleic (omega 6)
oleic 55% -83%
linoleic 3.5% - 21%
which is very significant if you are trying to minimise/reduce omega sixes.
http://r0.unctad.org/infocomm/anglai...c/Cxs_033e.pdf
http://www.agnr.umd.edu/NFSC/ShaneArdo.pdf
RB