TY  - GEN
AU  - Roer,E.
TI  - The twelve principle upanisads 
U1  - 181.4 
PY  - 1979///
CY  - New Delhi : 
PB  - Nag Publishers, 
N1  - V. I Isa, Kena, Katha, Prasna, Mundaka, Manduka, Taitiriya, Aitereya, and Svetasvatara-upanisads
ER  -