Links:
[1] http://www.powells.com/cgi-bin/partner?partner_id=29467&cgi=product&isbn=0520237781
[2] http://www.powells.com/cgi-bin/partner?partner_id=29467&cgi=product&isbn=0914093045
[3] http://www.powells.com/cgi-bin/partner?partner_id=29467&cgi=product&isbn=0892151412