What Is This Thing Called Science? Third Edition cover
What Is This Thing Called Science? Third Edition
by Alan F. Chalmers
ISBN: 0335201091
Buy on Amazon
Found in 1 comment on Hacker News
pjriot · 2012-12-20 · Original thread
I highly recommend:

http://www.amazon.co.uk/What-Thing-Called-Science-Third/dp/0...

You'd be surprised how difficult it is to nail down what constitutes a science.