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Krauß, R. Book Review: Jacob Roodenberg, Krassimir Leshtakov, Vanya Petrova (eds.), Yabalkovo, Vol. 1 (Maritsa Project, Vol. 2), Sofia: ATE – Ars Et Technica Explicatus, 2014. Hardcover, 488 Pages, 508 Images, 26 Tables, ISBN 978-619-90348-1-1. Be-JA 2015, 5, 215-217.