- Author: Graham John M., Higgins Joan A
- Language: English
- Year: 1997
- Author: John M. Graham Joan A. Higgins (auth.)
- Language: English
- Year: 1994
- Author: John M. Graham Joan A. Higgins
- Language: English
- Year: 1993
- Author: John M. Graham Joan A. Higgins
- Language: English
- Year: 1993
- Author: John M. Graham Joan A. Higgins
- Language: English
- Year: 1993
- Author: John M. Graham Joan A. Higgins
- Language: English
- Year: 1993
- Author: Graham J.M. Higgins J.A.
- Language: English
- Year: 1993