Astronomicheski osnovi na pŭrvobŭlgarskoto letobroene /

by Rogev, Boris, Rogev, Boris
Published 2021

Calendars of Middle East countries : conversion tables and explanatory notes /

by T͡Sybulʹskiĭ, V. V (Vladimir Vasilʹevich), T͡Sybulʹskiĭ, V. V (Vladimir Vasilʹevich), T︠S︡ybulʹskiĭ, V. V (Vladimir Vasilʹevich), T︠S︡ybulʹskiĭ, V. V (Vladimir Vasilʹevich)
Published 1979