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Published online by Cambridge University Press: 25 January 2017
1 Doris Z. Stone, "A Preliminary Investigation of the Flood Plains of the Río Grande de Terraba, Costa Rica," American Antiquity, Vol. 9, No. 1, 1943
2 J. A. Mason. "Costa Rican Stonework," Anthropological Papers of the American Museum of Natural History, Vol. 39, Pt. 3, New York, 1945, Pis. 52-60.
3 For work further south, in Panama, see below, p. 80. Editor.
4 For work further north, in Costa Rica, see above, p. 78. Editor.