Stt̀n ̕hv zdr̀na (Czechoslovakia)
Czechoslovak State Observatory records, 1775-1952.
Observatories -- Documentation -- Bohemia (Czechoslovakia) -- 18th century.
Observatories -- Documentation -- Bohemia (Czechoslovakia) -- 19th century.
Observatories -- Documentation -- Bohemia (Czechoslovakia) -- 20th century.
AIP-ICOS
Archiv Akademie v d esk ̌Republiky. Central Archiv. V Zm̀cc̕h 56/76, 181 00 Praha 8 - Bohnice.