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G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B27/00—Planetaria; Globes
G09B27/02—Tellurions; Orreries
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FR1047120D1951-12-271951-12-27Procédé et appareil pour l'enseignement de la cosmographie
ExpiredFR1047120A
(fr)