Yang Style Traditional Long Form T'ai Chi Ch'uan: As Taught by T.T. Liang by Gordon Muir is a result of the authors many years of study with Master T. T. Liang and what he has learned in the ensuing years. 

This book goes into detail about the physical mechanics of performing good Taiji. Included are chapters on principles of movement, creation and use of body structures and writings of Master Liang. The last section of the book is a detailed look, with photos and description, of the 150 postures of the traditional Yang style long form.