Fundamentals of semigroup theory
John M. Howie · Clarendon · 1995
Wikipedia
{{cite book |last=Howie |first=John M. |title=Fundamentals of semigroup theory |publisher=Clarendon |year=1995 |isbn=9780198511946}}
John M. Howie · Clarendon · 1995
{{cite book |last=Howie |first=John M. |title=Fundamentals of semigroup theory |publisher=Clarendon |year=1995 |isbn=9780198511946}}