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 Q Science
Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge Q Science
Practical electricity; a laboratory and lecture course for first year students of electrical engineering, based on the international definitions of the electrical units Q Science
