There are 1 book by C. A, O'Callaghan on BookOrb. A strong starting point is The MRCP Part 1 (1997). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has C. A, O'Callaghan written?
BookOrb lists 1 book by C. A, O'Callaghan.
Where should I start with C. A, O'Callaghan?
A good starting point is The MRCP Part 1 (1997).
What is the C. A, O'Callaghan books in order list?
In publication order: 1. The MRCP Part 1 (1997).