Ezhegodnik bol'shoǐ sovet-skoǐ éntsiklopedii, 1968.
Edition: Vȳp. 12.
Publisher: Izd-vo "Sovet-skaya éntsiklopediya"
Published: 1968
Place of publication: Moskva
Language: rus
Number of pages: 621
Work titles: Bol'shaya Sovet-skaya Éntsiklopediya.