Gisela Johanna Ida von Poswik (June 19, 1875 – October 2, 1940) was a German-born American nurse and physician and an early specialist in radiology. (en)
Gisela Johanna Ida von Poswik (June 19, 1875 – October 2, 1940) was a German-born American nurse and physician and an early specialist in radiology. (en)