Estestvennonauchnye predstavlenii︠a︡ Drevneĭ Rusi : schislenie let, simbolika chisel, "otrechennye" knigi, astrologi︠a︡, mineralogii︠a︡ /
Simonov, Rėm Aleksandrovich.
Afanasʹev, K. N.
Nauchnyĭ sovet po istorii mirovoĭ kulʹtury (Akademii︠a︡ nauk SSSR)
Moskva : Myslʹ,
1988.
Includes bibliographies.
Science
Science, Medieval.
Astrology
Chronology