I got it ! ;D
Well, what can I say...
I cannot read 261 pages in English in some minutes or even hours. I'll need days, maybe weeks. And I'll need surely a long time too to compare with my, most in french, old files (articles and books and in particuler the two Cuny books from 1944 to 1960), to compensate my memory.
to do it short :
This book is a synthesis of a lot of files (articles or books), but not only. There is a lot of new too.
If some of the readers could be disappointed because of relatively short détails about some known planes (the lovers of the Mirage 4000, for example) there is too unknown news about others (for example designs or photos) and a lot of unknown planes too. For example, I loved the Dassault's part of the Mach 3 chapter. It's in the same time a complement and sometimes a progress to the well known article of Alexis Rocher in Le Fana 461 from April 2008 (in particuler for the lovers of the MD-750, like me ;D).
In the same time too we have maybe news about planes that we searched on SecretProjects. For example, I believe that the plane of the page 266 was known here as a Dassault or AFGV project, but it's a Sud-Aviation project.
I have a lot of questions in mind (in particuler for the Dassault part of the Mach 3 chapter) but it will be probably better to ask all after the complete reading of the book.
Well, I don't regret my money for this book and I'm already a supporter of the next