This is a delicate area of copyright law. In most legal jurisdictions (including the EU and US), copyright expires 70 years after the author's death. While the original Veliki Narodni Kuvar is old, specific annotated versions from the 1980s may still be under copyright.
The PDF, labeled Veliki_Narodni_Kuvar, never left the town. It was copied onto drives that lived with bakers and schoolteachers and fishermen—distributed redundantly, always offline. Each family added notes in their own hand to their copy: a different fold in the dough, an extra pinch of salt, a farewell recipe written in a child's shaky handwriting after a funeral. The file quietly became the village's archive of taste and tenderness.