`   ==Croce as a source==  As  and I have both pointed out, Professor Pietro Croce's book is not an appropriate source for the definition of the world.  I searched Amazon.com again for ``Pietro Croce`` and got ZERO hits.  The fact that Amazon doesn't list it even as an out-of-print book certainly suggests that it is an obscure work.  A Google search turns up a handful (693) hits - many of which seem to be extremist web sites of one form or another.  Croce, while there is no indication he engages in violent acts like some anti-vivisectionist (SHAC, ALF, etc.) is certainly a holder of extreme views in the sense that he says he wants to do away with all animal experimentation - a view not shared by many of his colleagues.  Therefore, I think any references to him are potentially POV.`