In Russian. Petrov, Yuri Alexandrovich. Philosophical problems of mathematics. Moscow: Knowledge, 1973. Filosofskie problemy matematiki. In Russian/Philosophical problems of mathematics. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7323444
In Russian. Petrov, Yuri Alexandrovich. The logical function of categories of dialectics. Moscow: Higher School, 1972. Logicheskaya funktsiya kategoriy dialektiki. In Russian/The logical function of dialectic categories. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7323441