First Edition 1960 version. The cover is worn with marks, bends & parts missing, particularly on the spine. Pencil marks on some pages & slight dog earring of pages.
The Manual of Free Energy Devices and Systems by D.A. Kelly
The Manual of Free Energy Devices and Systems
Mullard Quick Reference Guide 1987
Mullard Quick Reference Guide 1978/79 Part 1 and Part 2 Books
