Author Affiliations +
Lawrence R. Heaney
(LRH) Field Museum of Natural History, 1400 S Lake Shore Drive, Chicago, Illinois 60605, U.S.A. lheaney@fieldmuseum.org
Philip J. Piper, Armand S. B. Mijares
(PJP, ASBM) Archaeological Studies Program, Palma Hall, University of the Philippines, Diliman, Quezon City 1101, Philippines