Espejón Limestone and Conglomerate (Soria, Spain): Archaeometric Characterization, Quarrying and Use in Roman Times - V. García-Entero; A. Garcia-M.; Sergio Vidal Álvarez; María J. Peréx Agorreta; Zarco Martínez, Eva (ASMOSIA XI, Interdisciplinary Studies on Ancient Stone, Proceedings of the XI International Conference of ASMOSIA, 2018)