21-3-7
Ancient Egyptian Maize by G. Thompson [2000 WRZ$]
https://forum.mobilism.org/viewtopic.php?f=72&t=5634944
Copper in Ancient Egypt by M. Odler (2023)[1000 WRZ$]
https://forum.mobilism.org/viewtopic.php?f=72&t=5643197
Ancient Mines of Kitchi-Gummi [1000 WRZ$]
Isle Royale [500 WRZ$]
https://forum.mobilism.org/viewtopic.php?f=72&t=5634944
Copper in Ancient Egypt by M. Odler (2023)[1000 WRZ$]
https://forum.mobilism.org/viewtopic.php?f=72&t=5643197
Ancient Mines of Kitchi-Gummi [1000 WRZ$]
Isle Royale [500 WRZ$]