This is an interesting book, but I'm not sure I'd recommend it.
The good: it's an update of a historical French volume on preserving, and it's pretty comprehensive. It's supposed to have been updated to cover current knowledge of canning times,etc., but some of the hot-bath canning times, in particular, look far shorter than ones I usually see for similar items. it is also very comprehensive, with specific details and recipes to cover pretty much everything one might encounter.
The problems: generally, what's available in the USA is rather different from what the French countryside had to offer 60+ years ago, and it would be hard to source many of the main ingredients. Also, see above about the updated times; I am not sure I'd trust the canning times without a separate confirmation for a similar recipe from a known, reliable source.
Another negative- and this could be serious!: even a fairly casual reading found many, many errors in the text, even including mis-titling at least one recipe. This makes me even more concerned about trusting the canning times, etc.
It's interesting, but more as a historical inspiration than a go-to for actual preserving. If you want something that's more relevant for us in the USA today, I'd really recommend Alice Water's "My Pantry".