SSSR--svet
by Տիգրան Պետրոսյան, Aleksandar Matanović, Boris Vasilyevich Spassky
ChessTournaments, 1970
Writing a summary for young readers…
For young readers
Book data: Open Library
by Տիգրան Պետրոսյան, Aleksandar Matanović, Boris Vasilyevich Spassky
Book data: Open Library