




Shelf and handling wear to cover and binding, with general signs of previous use. Wear and stain on the covers. Text is clear of markings and notations. Secure packaging for safe delivery.
One hundred years ago, scientist/inventor/philospher John Keely built various devices that were able to overcome gravity, tunnel through rock using a hend-held device, use acoustics to power engines, and create superconductivity by using wires made of gold, silver and platinum. Almost lost, this book...