Sûvremenni problemi na nauchnata informatsiya.
Publisher: Izd-vo na Bûlgarskata akademiya na naukite
Published: 1974
Place of publication: Sofiya
Language: bul
Notes: At head of title: Bûlgarskata akademiya na naukite. Tsentûr na nauchna informatsiya s Tsentralna biblioteka.

Summaries in Russian and German.