Well it is in english, and you can actually find it on amazon for a price way to expensive for an old book. HORLOCK 1966 I suggest you to check for the paper version in your engineer library instead of a digitalised version.
Edit: Thinking about it, if you wish to seek some paper, I can suggest you to go check "J.D. Denton" publications; his paper are usually on free access (at least on turbomachinery). But paper may not be suitable if you are only starting to learn turbomachinery.