The discovery of aragonite sedimentary on the top of lacustrine sedimentary in the Middle Pleistocene in Yangyuan Basin, Hebei Province and its scientific significance
JI Yunping, WANG Guiling, ZHAO Hua
Earth Science Frontiers . 2016, (3): 178 -185 .  DOI: 10.13745/j.esf.2016.03.022