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The sacraments in Medieval canon law
The real presence of Christ, the minister, and the materials of the sacrament
The form of the sacrament and the elevation of the host
Communion: union with Christ and unity in the sacrament
Custody of the Eucharist and communion of the sick
Corpus Christi and wonder hosts.
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The Eucharist in medieval canon law by Thomas M. Izbicki. ISBN 9781107561809. Published by Cambridge University Press in 2015. Publication and catalogue information, links to buy online and reader comments.