North American Grid-Based Sampling Frame: Puerto Rico at a 5x5km resolution
收藏data.gov2026-01-17 收录
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This sampling frame is a set of grid-based finite-area frames spanning Canada, the United States, and Mexico. The grid for the United States is broken into individual...
本抽样框（sampling frame）为一组覆盖加拿大、美国及墨西哥的基于网格的有限区域框架。其中美国区域的网格被拆分为独立的……
