Wellington: Reed, 1977. PB, pictorial card wraps, VG/--, 201pp, b/w photos, maps, diagrams, glossary, appendices, index, map epp. The sequel to Cathie's Harmonic 33, a theory of a world magnetic power grid that explains UFO sightings and other phenomena, suggests portions of the grid are being exploited by scientists of certain countries. Mild rubbing to edges and corners of wraps, inside has slight foxing to edges of text block, else square, clean and tight with no markings, a very good copy of an unusual UFO book. 430g when packed.. Reprint. Trade Paperback. Very Good. 8vo - over 7¾" - 9¾" tall.