Esterer, Arnulf K. Discoverer of X-ray : Wilhelm Conrad Rontgen / by Arnulf K. Esterer. - New York : Julian Messner, 1968. - 191 p. : ill. ; 22 cm. Includes bibliography and index. LCCN: 6814942 Subjects--Personal Names: Rontgen, Wilhelm Conrad, 1845-1923. Subjects--Topical Terms: X-ray.