Recreational birding in the Southeast United States
收藏data.gov2024-09-14 收录
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Total recreational birding activity (by state and year) estimated by the National Survey for Fishing, Hunting, and WIldlife-Associated Recreation was spatially...
由全国钓鱼、狩猎及野生动物相关休闲活动调查（National Survey for Fishing, Hunting, and Wildlife-Associated Recreation）估算得到的按州份与年度划分的休闲观鸟活动总量，在空间维度上……
