1
Gray, George Buchanan
| T & T Clark |
1976
2
Gray, George Buchanan
| T & T Clark |
1949
3
Gray, George Buchanan
| T & T Clark |
1971
6
Gray, G. Buchanan
| Adam and Charles Black |
1985
7
Gray, G. Buchanan
| Hodder and Stoughton |
1990