BLM CA Administrative Unit Boundary District Polygon

This polygon feature class represents the spatial extent of historical BLM Administrative Unit Boundaries (at the State, District, and Field Office levels).This state...本多边形要素类代表历史上美国土地管理局（Bureau of Land Management, BLM）行政单位边界（涵盖州级、区级及野外办事处层级）的空间范围。本州……