The principal Upaniṣads - Radhakrishnan, S. (Sarvepalli), 1888-1975. (India : HarperCollins, 1994)
English and Sanskrit.
"First published in 1953 by George Allen & Urwin, Ltd."--T.p. verso.
Includes bibliographical references (p. 951-952) and index.
Keywords: Upanishads -- Criticism, interpretation, etc