Edinna nomenklatura na izmeritelnite edinit͡si
By: Nauchen t͡sentŭr za sŭzdavane i razvitie na edinna sistema za sot͡sialna informat͡sii͡a.
Publisher: ESSI
Published: 1976
Place of publication: Sofii͡a
Language: bul
Number of pages: 46
Notes: "ESSI 10"--Cover.