There are surprising variations in books these days, so I wouldn't be too concerned :-))
One of the reasons we buy the better quality aviation books in the USA is because the prices are always less than we can get them for in the UK.
Graham White has edited some nice aviation books, the R-4360 book that he did is one that I am hoping to pick up at Dayton this year. We already have the "Allied Aircraft Piston Engines of World War II" that we got at Dayton in 2005.
-- Peter A Forbes Prepair Ltd, Rushden, UK snipped-for-privacy@prepair.co.uk