Books that made you a better Software Engineer?

Software Engineering: Report of a conference sponsored by the NATO Science Committee, Garmisch, Germany, 7th-11th October 1968, P Naur, B Randell.

Software engineering techniques: report on a conference sponsored by the NATO Science Committee, Rome, Italy, 27th to 31st October 1969, JN Buxton, B Randell - 1970

These two books (actually conference reports in a unique style) got me thinking about software engineering as a discipline. Much of what was said then is applicable today.

PHP and MySql Web Development and Real World Haskell are what you might consider formative for me.