TY  - BOOK
AU  - Ljapin,E.S.
TI  - Semigroups
T2  - Translations of mathematical monographs
U1  - 512.86 
PY  - 1963///
CY  - Providence
PB  - American Mathematical Society
KW  - Semigroups
N1  - "Publication aided by grant NSF-GN 57 from the National Science Foundation."; nclude bibliography and index
ER  -