Materiali i dokumenti po nauchno-tekhnicheska informat͡s︡ii͡a︡.
Contributors: T͡S︡entralen sŭvet na nauchno-tekhnicheskite sŭi͡u︡zi.
Publisher: T͡S︡entr. sŭvet na nauch.-tekhn. sŭi͡u︡zi v Bŭlgarii͡a︡
Published: 1978
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 32
Subjects: Science -- Bulgaria -- Information services.; Technology -- Bulgaria -- Information services.