TY  - BOOK
AU  - RUEFF (Marcel) & JEGER (Max).
TI  - Sets & boolean algebra
SN  - 04 5100314
U1  - 511.32 RUES 
PY  - 1978///
CY  - ND
PB  - S. Chand & Co. Ltd.
KW  - Sets boolean algebra
ER  -