Kraków: Wydawnictwo Literackie, 1976. First edition. In publisher's printed cloth. With the illustrated dust jacket, designed by Barbara Paleta. In fine condition.. First edition. In publisher's printed cloth. With the illustrated dust jacket, designed by Barbara Paleta. 276, (4) p. First edition of Lem's collection of short stories, dealing with the problems of a feudal culture and the advance technology. "Sto trzydziesci siedem sekund" ( pp. 81-120) and "Edukacja Cyfrania" (pp. 121-172) were published first in this collection the rest of the stories were formerly published in various literary magazines or in Lem's earlier collection of 1963 "Noc ksiezycowa".