Scholarly analyses include Chi Li, The Beginnings of Chinese Civilization (1957, reprinted 1968); Kwang-chih Chang, The Archaeology of Ancient China, 4th ed., rev. and enlarged (1986), a pioneering, comprehensive synthesis based on the coverage of excavations reported to the end of 1985; David N. Keightley (ed.), The Origins of Chinese Civilization (1983), a collection of articles about environment and agriculture, cultures and peoples, and the genesis of the state; Jessica Rawson, Ancient China: Art and Archeology (1980), a study of the artistic significance of Neolithic and Bronze Age artifacts; William Watson, Cultural Frontiers in Ancient East Asia (1971), an illustrated analysis of cultural interaction; and Rukang Wu and John W. Olsen (eds.), Palaeoanthropology and Palaeolithic Archaeology in the People's Republic of China (1985), an account of Chinese research on early man.