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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
G09B17/00—Teaching reading
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FR346388D1904-09-201904-09-20Dispositif pour faciliter l'apprentissage de la lecture
ExpiredFR346388A
(fr)