Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
The Prehistory of Chalchuapa, El Salvador. Robert J. Sharer, general editor. Vol. One, Introduction, Surface Survey, Excavations, Monuments and Special Deposits. Robert J. Sharer, Bruce Anderson, David W. Sedat, Payson D. Sheets, and Dana Anderson, xvii+ 194 pp., illus. Vol. Two, Artifacts and Figurines. Payton D. Sheets and Bruce H. Dahlin. xx+ 211 pp., illus. Vol. Three, Pottery and Conclusions. Robert J. Sharer, xvii+ 226 pp., illus. University of Pennsylvania Press, 1978.