GUROVA, M. Book review: Ivan Gatsov and Petranka Nedelcheva. Pietrele 2: Lithic industry. Finds from the Upper Occupation Layers. Bonn: Habelt-Verlag, 2019, ISBN 978-3-7749-4164-9. Bulgarian e-Journal of Archaeology | Българско е-Списание за Археология, v. 10, n. 1, p. 149-156, 7 Jun. 2020.