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Title: The vertex groups of connected tree products of groupoids and HNN groupoids
Author: Tough, John Bruce
ISNI:       0000 0001 3535 5678
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1975
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Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available