David and I were surprised to discover yesterday that Hasler/McLeod's 'bible' is available for the iPad in the iTunes store. There's a downloadable sample which includes diagrams and images and which seems to work well, but neither of us were willing to test out the full download for £49.99 !
Adlard Coles who published the original hardback and paperback has it seems been bought by Bloomsbury from where you can get it in EPUB format
here, for £50 or as a paperback (click 'other formats') for £45.
On Amazon the paperback is currently £42.50 new or £29.99 used. I've added the links to our Directories > Recommended Books page.