There are 2 books by Michael C. O'Callaghan on BookOrb. A strong starting point is Unity in Theology (1983). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Showing 1 of 2 titles.
Frequently asked questions
How many books has Michael C. O'Callaghan written?
BookOrb lists 2 books by Michael C. O'Callaghan.
Where should I start with Michael C. O'Callaghan?
A good starting point is Unity in Theology (1983).
What is the Michael C. O'Callaghan books in order list?
In publication order: 1. Unity in Theology (1983).