This audio drama titled Приключенията на Лукчо (Priklyucheniyata na Lukcho) is a Bulgarian version of Gianni Rodari’s l romanzo di Cipollino (“The Adventures of Cipollino, the Little Onion”). Originally published in Italian in 1951, the children’s tale about political oppression became popular in the USSR and other countries of the Soviet Bloc. From Wikipedia:
In a world inhabited by anthropomorphic produce, Cipollino fights the unjust treatment of his fellow vegetable townsfolk by the fruit royalty (Prince Lemon and the overly proud Lord Tomato) in the garden kingdom. The main theme is the struggle of the underclass against the powerful, good versus evil, and the importance of friendship in the face of difficulties.
For this release from 1977, the unknown designer at Balkanton used letterforms from Lawless Type, an alphabet drawn by Walter Haettenschweiler and shown in Lettera 2 from 1961. Since this proto-typeface consists of the twenty-six basic Latin capitals only, the cover designer had to make some adjustments for letters without a Latin look-alike: V was flipped and И/Я flopped to obtain Л N R, Ч appears to be an H minus half a stem, Ю is a half an H plus a mirrored O, and П was built in a similar fashion. Thanks to Lawless Type’s irregular alignment and stroke contrast, such hacks don’t stand out.
I don’t recognize the sans used for the author’s name. The Czechoslovak Maršův Grotesk has a similar g, but as far as I can tell, it didn’t come in a Cyrillic version.