Dittrich, Arnost Ernst, 1878-1959.
Arnost E. Dittrich papers.
Astronomer. Professor at Charles University in Prague; directory of the observatory in Hurbanovo (Slovakia).
Astronomers -- Czechoslovakia. lcsh
AIP-ICOS
Archiv Akademie v d esk ̌Republiky. Central Archiv. V Zm̀cc̕h 56/76, 181 00 Praha 8 - Bohnice.