Hi Gretel,Sokal and Rohlf's Biometry also has a pretty good section on path analysis, as does Legendre and Legendre's Numerical Ecology, both of which I've found informative in the past.
-- Michael D. Rennie, Ph.D. Postdoctoral Fellow, Environmental and Life Sciences Program Trent University 2140 East Bank Drive, DNA Building (2nd Floor) Peterborough, Ontario K9J 7B8 Vox:705.755.2287 Fax:705.755.1559 www.people.trentu.ca/michaelrennie
