editorial素材 - Warsaw, Poland - May 1, 2019: Monument to Marie Sklodowska Curie, a Polish-French physicist and chemist who conducted pioneering research on radioactivity and discovered two elements, polonium and radium.
Warsaw, Poland - May 1, 2019: Monument to Marie Sklodowska Curie, a Polish-French physicist and chemist who conducted pioneering research on radioactivity and discovered two elements, polonium and radium.