1990 population density by block group for the conterminous United States
收藏DataONE2016-10-29 更新2024-06-26 收录
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资源简介：
This data set represents 1990 population density by block group
as a 100-m grid using data from the 1990 Census of Population
and Housing (Public Law 94-171 redistricting data). Grid cell
values represent population density in people per square
kilometer multiplied by 10 so that the data could be stored as
integer.
创建时间：
2016-10-29
