Methods of art history tested against prehistory : session C74. Spiral and circular forms : the most common rock art in the world? : session C81. European cave art : session C85. Euro-Mediterranean rock art studies : session S02. Global state of the art : session S07. Current state of North American rock art : session WS37 - Fidalgo, Cláudia; Oosterbeek, Luís (Archaeopress, 2010)