YogVidya Store › Classwork Book 1 Image 1 of 1 Classwork Book 1 £6.00 By Prashant Iyengar. Precepts, Concepts, Schemes, Themes and Perspectives in Asana and Pranayama. Published by RIMYI. Add To Cart Added! By Prashant Iyengar. Precepts, Concepts, Schemes, Themes and Perspectives in Asana and Pranayama. Published by RIMYI.