Coal-mining in China. A Cheap Way to clean Clocks. FOR 1864!, scientific american, 64-09-03

---

Coal-mining in China. A Cheap Way to clean Clocks. FOR 1864!, scientific american, 64-09-03

---

Size: 2835px × 4031px
Location:
Photo credit: © Corantos / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1864!, 64-09-03, american, analysis, art, broadsheet, cheap, china, clean, clocks, coal-mining, curious, developments, discover, discovery, education, emerging, engravings, experiment, health, industrial, information, innovation, insights, inventions, inventor, journal, lab, magazine, mind, monthly, paper, patented, practical, publication, research, revolution, sa, sciam, science, sciences, scientific, scientist, states, sustainability, tech, technology, trends, united, weekly, works