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In page John Mackintosh Howie:
"According to Christopher Hollings, :...a 'British school' of semigroup theory cannot be said to have taken off properly until the mid-1960s when John M. Howie completed an Oxford DPhil in semigroup theory (partly under Preston's influence) and Munn began to supervise research students in semigroups (most notably, Norman R. Reilly).[1]
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