Dear All,
Thank you for your very informative comments. I was just afraid not to make a mistakes if I used one or another. I also thought that the terminology was completely changed (which is not the case, my mistaken assumption) with the second edition, but in that edition both concepts are used as I revised it a couple of days ago.
So, I will try to stick to what you have been told me, and not be so stressed about the difference!
Thanks a lot!
Anabella
Received on Tue Aug 21 17:57:47 2012
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