We had the same (all yellow, but personal part was white, or at least as white as the shitty paper could be). But they were called “Golden pages” instead (“Žluté” (yellow) vs “Zlaté” (golden)), probably because in our language it sounds better.

Czechia btw.

In Norway there was one big book. Can’t remember the "catchment area. White pages where private, yellow businesses. Last one published in 2009, tho smaller one for local district was published until 2017