Here you can access a PostScript and PDF versions of D.J. Arnold, Lorna Balkan, Siety Meijer, R.Lee Humphreys and Louisa Sadler Machine Translation: an Introductory Guide, Blackwells-NCC, London, 1994, ISBN: 1855542-17x.
You can also download individual chapters (take the `2up' version if you want two a4 pages on each actual a4 sheet; take the `PDF' version if you do not have a PostScript printer or previewer).
The book contains a number of typos and other mistakes. You can find a list of some of them [here].
A web browsable (html) version is also available.
Please note, this book remains copyright the authors. You are free to download all or part of it for personal use, including study. Feel free to quote from it as you would from a normal book or article. If you want to use it for more than this, you need permission: you can get it by writing to me: doug@essex.ac.uk.