![134421](https://sdvigpress.org/images/creator/_default.jpg)
References
J. McKim Malville
Astronomy of Nabta playa![Open Access Link](images/OAlink.png)
2008
in: African cultural astronomy, Dordrecht : Springer
![Open Access Link](images/OAlink.png)
The astronomical gnomon![Open Access Link](images/OAlink.png)
2008
in: African cultural astronomy, Dordrecht : Springer
![Open Access Link](images/OAlink.png)
2008
in: African cultural astronomy, Dordrecht : Springer
2008
in: African cultural astronomy, Dordrecht : Springer