| Christian
O'Brien - Line A - The Cam Valley Loxodrome 1976 |
click
here |
| Christian
O'Brien - Line A - Cam Valley Loxodrome |
click
here |
| Christian
O'Brien - Longitude and Latitude |
click
here |
| Christian
O'Brien - Definition of a Loxodrome |
click
here |
| Christian
O'Brien - Line A Stone Markers |
click
here |
| Ziggurat
at Tchoga Zanbil |
click
here |
| Christian
O'Brien |
click
here |
