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
• 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