Paulsen, Allison Clement, A choronology of Guangala and Libertad ceramics of Santa Elena Peninsula in South Coastal Ecuador / Allison Clement Paulsen - Ann Arbor : Columbia University Press, 1970 - x, 244 p. ; 20 cm Bibliografía: p. 216-220 Subjects--Topical Terms: Arqueología--EcuadorCerámica--Ecuador Dewey Class. No.: 930.1 / P285ch