Our Knowledge Of The External World
| Publisher | George Allen & Unwin Ltd. |
| Format | Hardback |
| Language | English |
| Location | London, Great Britain |
| Reissued | 1922 |
| Second Impression | 1949 |
| This Impression | 1969 |
| This Edition Published | 1969 |
| Pages / Font | 251 pages |
Added by LHRrecords