Many public domain or shadow library .epub files mix up the two versions. Ensure the metadata specifies the publisher (French: Flammarion; English: Chatto & Windus).
Le Grand Cirque is a dense book (over 400 pages in print). EPUB files allow you to adjust font size, line spacing, and margins. This is crucial for older readers or those who want to read on a phone during a commute. Pierre Clostermann Le Grand Cirque.epub
Since you requested a .epub file, here is the simplest way to create one from the text above: Many public domain or shadow library