I read that book twice. Once with the german title "Der Mond is eine herbe Geliebte" (direct translation), then years later a friend recommended the book "Revol

I read that book twice. Once with the german title "Der Mond is eine herbe Geliebte" (direct translation), then years later a friend recommended the book "Revolte auf Luna" ("Riot on Luna"). I got half way through the book before I realized that I was reading the exact same book. Great story nevertheless.