One of his most famous works is the novel Aniara (1956) which in 1959 became an Opera, composed by Karl-Birger Blomdahl.
Links:
http://www.kirjasto.sci.fi/harrymar.htm
... an average density of 136.8/km² (354.8/mi²). The racial makeup of the town is 95.24% White, 0.93% African American, 0.13% Native American, 0.93% Asian, 0.00% ...