The Complete Works of Aristotle, Jonathan Barnes (Editor)

The Complete Works of Aristotle, Volume One & Volume Two by Jonathan Barnes (Editor), Princeton University Press, 1998. ISBN:0691016518

Buy The Complete Works of Aristotle Volume One at: Amazon.co.uk (P&P cheaper & quicker in EU)  Amazon.com (usually cheapest cover price)

Buy The Complete Works of Aristotle Volume Two at: Amazon.co.uk (P&P cheaper & quicker in EU)  Amazon.com (usually cheapest cover

This is the definitive edition of Aristotle's Complete Works works in English: the original Oxford translation revised by Jonathan Barnes to the highest standards of modern scholarship. Both hardback volumes are superbly bound and the type is easy to read. The pages have numerals printed in the outer margins to key the translations to Immanuel Bekker's standard edition of the Greek text of 1831. There is also an index to both editions.

The "Cambridge Companion to Aristotle" might be useful for readers requiring assistance.

Vol. 1 includes the works on logic, Physics, treatises on astronomy and animals, and Of the Soul. 
vol. 2 includes additional scientific treatises, Metaphysics, the Nicomachean Ethics, other works on ethics, Politics, Rhetoric, and Poetics.