| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Before the Enemy Is Within Our Walls: Catholic Workers in Cologne, 1885-1912: A Social, Cultural and Political History | 978-O-391-O4O96-O (O-391-O4O96-O) | 1999 |
C.S. · R. C. · R. S. · R. Sun · Raymond C. Sun · Raymond S.