TY  - BOOK
AU  - Spisani, Franco
TI  - GENERAL THEORY OF DIRECTED NUMBERS
U1  - 512.7 
PY  - 1983///
CY  - Bologna
PB  - International Logic Review
KW  - Numbers, Theory Of
N1  - Text In English And Italian; At Heat Of Title : Centro Superiore De Logica E Scienze Comperate
ER  -