Have used this one for nearly 30 years. Lots of traditional stuff, with really good info about the hows and why's of technique. Much is still usable for primal.
THE French Kitchen Diane Holuigue French Cooking FOR Australians Cookbook | eBay
Other favourites are my collection of David Thompson Thai cookbooks, the Elizabeth David books, and a paperback called Thai Cooking Class which has really good everyday recipes.
I have a bookcase full and while some are great for inspiration others have just one or two favourite recipes.