“Spray Technique: Tracing the Sketch Traditions of Limestone Cave in Lenggong, Perak”Fatan Hamamah Yahaya, Sakinah Abu Bakar, Norziani Dahalan Omar and Nazirah Md YusofSHS Web of Conferences, 18 (2015) 02003DOI: https://doi.org/10.1051/shsconf/20151802003