TY  - BOOK
AU  - Perron, Oskar
TI  - IRRATIONALZAHLEN
U1  - 512.81 
PY  - 1951///
CY  - N. Y.
PB  - Chelsea Pub. Co.
KW  - Numbers, Irrational
N1  - A Reprint Of The 1939 Ed., Pub. By W. De Gruyter
ER  -