00273nam a22001097a 4500020001800000082001800018100002100036245003600057260004700093300000800140650001500148  a81-7052-202-1  a294.59218 SIV  aSivananda, Swami  aEssence of Principal Upanishads  aUttarakhandbThe Divine Life Societyc1959  a164  aUpanishads