冲-洪积平原1∶5万区域地质调查技术方法探索
赵勇

Exploration of the technology and method of 1∶50 000 regional geological survey in proluvial and alluvial plain
ZHAO Yong
永定河韩家铺一带河道泥砾层混杂堆积(洪泛作用)剖面