Great choice, talking as Sci-fi fan (from my childhood). It was published
in Spain (my country) by 1968.
El jue., 31 dic. 2020 8:21, Dave Horsfall <dave(a)horsfall.org> escribió:
2100? Forget it... Too bad, as "Revolt in 2100 (?)" is one of my
favourite Heinlein books.