This
is a version of the book I published in 1993 with Blackwell.I am currently in the process of (slowly)
revising it for a prospective second edition.The chapters on this site are mainly derived from my ultimate draft of the
Blackwell book, though without the changes added in proof.The Bibliography is also currently missing.
The
main revision so far is Chapter 1, which has been substantially rewritten,
originally for the Greek edition (2002);some consequent changes have also been made to chapter 3 (at the end of
section 3.10).