TY  - BOOK
AU  - Ginsburg Seymour
TI  - Algebric and automata-theoretic properties of formal languages
T2  - Fundamental studies in computer science; 2
U1  - B2893P0aD65,8(B), L52 
PY  - 1975///
CY  - Amsterdam
PB  - North-Holland         
KW  -  algebra
KW  - mathematics
ER  -