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. Quantity: Add To Cart Added! By Prashant Iyengar. Precepts, Concepts, Schemes, Themes and Perspectives in Asana and Pranayama. Published by RIMYI.