[Warszawa (Warsaw)]: Spoldzielnia Wydawnicza Oswiatowa "Czytelnik" 1951.
First edition. Tall octavo. 334, pp. Publisher's illustrated wrappers. Text in Polish. Cover designed by Jan S. Miklaszewski. Slight nicks on the spine, a few pencil notes, and light soiling on the rear panel, pages toned due to acidic paper, insignificant owner's inscription in ink on half title, a very good copy. First edition of Lem's debut book, a science fiction novel of an ideal, socialist utopia. Stanislaw Lem (1921--2006), author of Solaris, was a Polish writer, the most celebrated science fiction author in the Communist world. Rare. OCLC locates three copies, two in Poland and one in Switzerland.