BLM AK Administrative Unit Boundary (Line)

This polygon feature class represents the spatial extent of active BLM Alaska Administrative Unit Boundaries at the State, District, and Field Office levels.本多边形要素类（polygon feature class）表征了美国土地管理局（Bureau of Land Management, BLM）阿拉斯加分部现行有效的州级、区级与野外办事处层级行政单元边界的空间范围。