TY  - BOOK
AU  - Higgins, Peter M.,
ED  - University of Oxford
TI  - Techniques of semigroup theory
T2  - Oxford science publications
SN  - 0198535775
AV  - QA171 H51
PY  - 1992///
CY  - Oxford
PB  - Oxford University Press
KW  - Semigrupos
ER  -