The Crystal Workbook: A Complete Guide to Working With Crystals. Ursula Markham, Sterling Pub. Co., Inc., 1988.
 
Body, Mind & Spirit 
ISBN: 0850307139
 
Markham, who uses crystals in her work, explains the practical applications of crystals and semiprecious stones through a series of exercises and experiments. This guide examines the role of crystals through the ages and explains how they have the ability to focus the mind and its energies.
 
Secure binding with clean pages, mild edge creases, and a heavy bump at the rear bottom (effecting several rear pages). Softcover book.