John P. Dalton

• Cysteine Proteases of Pathogenic Organisms
• Cromm Cruaich of Magh Sleacht
• Symbolic operators
• The Archiepiscopal and Deputed Seals of York 1114-1500 (Borthwick Texts & Calendars)
• The archiepiscopal and deputed seals of York, 1114-1500