Thin sections photos taken with an optical microscope. Print on cotton paper, 21 x 29,5 cm, 2016 Frottages of the Samples Evaluation of the Fine Dust Palazzetto Tito, VeniceMuseo di Palazzo Poggi, Bologna Distribution of the Sands Frottages Sassi/Stones. Reading the rock admin2017-02-19T17:46:02+00:00