Sivananda, Swami The principal upanishads : Isa, Kena,Katha, Mundaka,Taittiriya, Aitareya and Svetasvatara upanishads with text meaning notes and commentary - 1983 - U. P. The Devine Life Society - xvi,528p. Subjects--Topical Terms: Hinduism--Upanishad--Principal upanishadsUpanishads--Principal upanishads