From child's pose to yogic sleep, this convenient (6x9") reference provides one-page entries on 150 yoga poses. Each asana entry contains a difficulty rating (based on flexibility, strength, and balance), brief instructions based on the principles developed by B.K.S. Iyengar, and a color photo of one of 17 different models representing various styles including ashtanga, vinyasa, and Iyengar. The book also contains a two-page spread illustrating each pose of sun salutation, plus lists of books, websites, and organizations. The poses are indexed in English and Sanskrit. DiTuro is a yoga photographer. Yang is founder of the Blue Point Yoga Center. Annotation ©2012 Book News, Inc., Portland, OR (booknews.com)