Nat︠s︡ionalna produktova klasifikat︠s︡ii︠a︡ po otrasli (NPKO)
Publisher: Statistichesko izd-vo i pechatnit︠s︡a
Published: 1998
Place of publication: [Bŭlgarii︠a︡]
Language: bul
Number of pages: 238
Subjects: Industries; Handbooks, manuals; Classification; Commercial products