Man pages matching name fbreader in section 1:

FBReader.1.en	debian 10 / fbreader
fbreader.1.en	debian 10 / fbreader
FBReader.1.en	debian 11 / fbreader
fbreader.1.en	debian 11 / fbreader
FBReader.1.en	debian 12 / fbreader
fbreader.1.en	debian 12 / fbreader