Penn researchers are credited for their contributions to the 1956 to 1966 excavation of Tikal in Guatemala and the Great Ziggurat of Ur in modern-day Iraq.
https://tinyurl.com/5uw3hjxf Business InsiderPenn researchers are credited for their contributions to the 1956 to 1966 excavation of Tikal in Guatemala and the Great Ziggurat of Ur in modern-day Iraq.
https://tinyurl.com/5uw3hjxf Business Insider