http://assets.cambridge.org/97805211/10570/cover/9780521110570.jpg
http://www.loc.gov/catdir/enhancements/fy1007/2010008739-b.html
http://www.loc.gov/catdir/enhancements/fy1007/2010008739-d.html
http://www.loc.gov/catdir/enhancements/fy1007/2010008739-t.html