Trust a 'wee Scotty' to be way ahead when it comes to a bargain!
Thanks for the tip re search terms, too, Gordon: very useful.
Yes, I don't mind admitting I'm playing catch up: it's opened a whole new world of book bargains. I admit I have a weakness for good reference books, and this is just the 'bees knees' for finding them.
The first of the two WW2 volumes arrived yesterday: it is even better than described.
Mike C