TY  - BOOK
AU  - Stone,Harold S.
TI  - Discrete mathematical structures and their applications
AV  - QA162 .S77
U1  - 512 
PY  - 1973///]
CY  - Chicago
PB  - Science Research Associates
KW  - Algebra, Abstract
KW  - Group theory
KW  - Machine theory
N1  - Bibliography: p. 388-392
ER  -