TY  - BOOK
AU  - Norton,M.Scott
TI  - Finite mathematical systems
T2  - Exploring Mathematics on Your Own; 17
AV  - MATH QA247.35.N6 
PY  - 1966///
CY  - London
PB  -  : John Murray
KW  - Modular arithmetic
N1  - Includes bibliographical references
ER  -