TY  - BOOK
AU  - Pfeiffer, Paul K.
TI  - SETS, EVENTS, AND SWITCHING
U1  - 512.7 
PY  - 1964///
CY  - N. Y.
PB  - Mcgraw-Hill
KW  - Aggregates
KW  - Switching Theory
KW  - Set Theory
N1  - Bibl. : P. 119-120
ER  -