Chongqing Zhongxian Dengjiatuo yizhi Shang Zhou yicun 2003 nian fajue jianbao 重庆忠县邓家沱遗址商周遗存2003年发掘简报 = The Excavation of the Remains of the Shang and zhou Dynasties at Dengjiatuo Site in Zhongxian County, Chongqing