“Keys to the Past.” San Rock Art, by J. D. Lewis-Williams, Ohio University Press, ATHENS, 2011, pp. 49–63, www.jstor.org/stable/j.ctt3fgwsf.5. Accessed 10 Aug. 2020.
Lewis-Williams, J. (2011). Keys to the past. In San Rock Art (pp. 49-63). ATHENS: Ohio University Press. Retrieved August 10, 2020, from www.jstor.org/stable/j.ctt3fgwsf.5
Lewis-Williams, J. D. "Keys to the past." In San Rock Art, 49-63. ATHENS: Ohio University Press, 2011. Accessed August 10, 2020. www.jstor.org/stable/j.ctt3fgwsf.5.
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