File:People attending UM physics symposium pose for group photo Summer 1931.jpg
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![File:People attending UM physics symposium pose for group photo Summer 1931.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/90/People_attending_UM_physics_symposium_pose_for_group_photo_Summer_1931.jpg/800px-People_attending_UM_physics_symposium_pose_for_group_photo_Summer_1931.jpg?20240201170819)
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