The twelve principal upanisads (Vol.1)  in three volumes 
E. Roer , R. L. Mitra and E. B. Cowell 
 - Delhi  Nag  1978 
 - X, 312p. 
<br/><br/><label>ISBN: </label>81-7081-037-8 
<br/><br/><label>Dewey Class. No.: </label>294.5921  / R717