The book is a research work on the topic 'Theory and Practice of Kalasa Karanas and Sthanaka - Mandala Bheda' from Kumbharaja's NrtyaRatnaKosa to the sincere lovers of Dance. The book exhibits Dr. Sandhya Purecha's deep knowledge in the subject and her research acumen coupled with aesthetically perfect performances. The illustrations presented in the book are not only supporting but they orient the reader with the point through lucidity of language and clarity in thought. A book of such kind was a need of time for all those in the field for it explores some unexplored areas like Kalasa etc. Dr. Sandhya has widely discussed the concept of Kalasa and thrown a food of light with different sub-chapters thereon which are titled as Vidyut-Kalasa, Khadya-Kalasa, Baka-Kalasa etc. The chapter II discusses the Sthanaka-Mandalas in details in more than 150 pages and acquaints the reader with the concept in detail.