2
Gray, George Buchanan
| T & T Clark |
1949
3
Gray, George Buchanan
| T & T Clark |
1971
5
Gray, George Buchanan
| T & T Clark |
1976
6
Gray, G. Buchanan
| Adam and Charles Black |
1985
9
Gray, G. Buchanan
| Hodder and Stoughton |
1990