00404nam a2200169Ia 4500 512 H636.TS Higgins, Peter M. Techniques of semigroups theory Oxford Oxford University Press 1992 x, 258p. Index. Glossary "Oxford science publns." 0 0 0 0 ISI ISI 1998-09-09 0 512 H636.TS DP22151 2019-02-14 00:00:00 2019-02-14 BK 9563 9563 9563