Invasion Biology

While researching for a project i have been been re-reading David Holmgren's writings,
on his web page
I came across this gem- his review of a book "Invasion Biology:Critique of A Pseudoscience "
it makes for really interesting reading.
The shire of Nillumbik seem to be particularly paranoid about the invasion of "environmental weeds”.It was great to read an elaboration of an alternate view.