1. Richard Kubla (opera singer) Creator: Veselý, Bohumil Publisher: Národní filmový archiv Type: video and clip Subject: kurt tenisový, Galerie osobností, and People::Kubla Richard (1890-1964) Language: No linguistic content Description: Opera singer Richard Kubla on a tennis court. Rights: http://creativecommons.org/licenses/by-nc-nd/4.0/, PUB, and Creative Commons - Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)