6 books
Handbuch der Spectroscopie. Erster Band.
A Course of Quantitative Analysis for Students (Classic Reprint)
Air and Its Relations to Life; Being with Some Additions the Substance of a Course of Lectures Delivered in the Summer of 1874 at the Royal Institutio
Water, air and disinfectants
A Course of Quantitative Analysis for Students
Air And Its Relations To Life