"...the author is admired for integrating the subject at its infancy; the book describes phenomena, domain structures, and theories of phase transition and wall mobility, with generous illustrations of geologically interesting materials. The first few chapters are suitable for general reading, the level being similar to the articles in Scientific American. The more persistent readers will benefit from later chapters and a long bibliography of known co-elastic crystals. I strongly recommend this book to all science and engineering libraries, as well as to anyone who wishes to learn ferroelasticity." Z. Suo, PAGEOPH