  The mysteries of the Universe are international, the skies are not crossed by
borders. However, the knowledge is transmitted by language, imposing linguistic
barriers that are often difficult to break through. Bulgaria is considered as
an example of a country with relatively small reader base -- it has a
population of about 6.5 million (2021) and the Bulgarian language has probably
$\sim$7 million speakers, if the diaspora in US, Germany and elsewhere is
accounted for. The smaller-scale market, in comparison with larger non-English
speaking countries, poses a number of limitation to the publishing landscape:
(i) the local authors are discouraged to pen both popular and scientific
astronomy books, because of the limited financial incentive; (ii) the market is
heavily dominated by translations (from Russian before 1989, from English
nowdays), but even those are fewer than in bigger countries, because the
translation overhead costs are spread over smaller print runs. The history of
the astronomy publishing in Bulgaria is summarized, with some distinct periods:
pre-1944, the communist era 1944-1989, the modern times post 1989. A few
notable publications are reviewed. Finally, some practices to help astronomy
book publishing in languages with smaller reader bases are suggested, taking
advantage of the recent technological developments.
