William Joseph Hammer

Radium, and Other Radio-active Substances; Polonium, Actinium, and Thorium. With a Consideration of Phosphorescent and Fluorescent Substances, the ... of Disease by the Ultra-violet Light

Radium, and Other Radio-Active Substances; Polonium, Actinium, and Thorium. with a Consideration of Phosphorescent and Fluorescent Substances, the Properties and Applications of Selenium, and the Treatment of Disease by the Ultra-violet Light

Radium, and Other Radio-Active Substances