RARE critical edition of the original Sanskrit text of a classic commentary on the ten principal Upanishads by Adi Shankara (early 8th century CE), an influential Hindu philosopher known as the one of the greatest exponents of the doctrine of Advaita Vedanta. 190x130mm. 541 pages. Brown cloth Hardcover. Cover corners and spine edges bumped and rubbed. Cover edges slightly bumped and rubbed. Binding slightly loose. Binding visible on inner cover and between rare advertisement pages. Spine wrinkled. Two stamps on front whitepage. Previous owner`s small stamp on title page left upper corner. Title page right upper corner missing (NO damage to text), left upper corner wrinkled and slightly torn. Some pages bottom corner slightly bumped/wrinkled. Pages yellowing. [SUMMARY]: This rare critical edition of one of the key Indian philosophical and theological treatises, with classic medieval commentary by one of the most revered Hindu philosophers and theologians, is in good condition.