The bulb retouchers in the Levant: New insights into Middle Palaeolithic retouching techniques and mobile tool-kit composition Centi, Laura ; Groman-Yaroslavski, Iris ; Friedman, Neta ; Oron, Maya ; Prévost, Marion ; Zaidner, Yossi Abstract Publication: PLoS ONE Pub Date: July 2019 DOI: 10.1371/journal.pone.0218859 Bibcode: 2019PLoSO..1418859C