Data Structure ?
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Data Structure ?
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README.md
文脈
米国で販売される銃器は、米国司法省酒類・たばこ・銃器・爆発物局によるライセンスを取得していなければなりません。このデータセットは、2017年7月時点で有効なすべての銃器ライセンスの記録です。
内容
このデータセットには、米国のすべての連邦銃器ライセンス（FFL）保有者の名前、ライセンスの種類、有効期限、および所在地が含まれています。可能なライセンスの種類は以下の通りです。
* 01 破壊装置以外の銃器の販売業者（銃工を含む）
* 02 破壊装置以外の銃器の質屋
* 03 骨董品と遺物の収集家
* 06 銃器用弾薬の製造業者
* 07 破壊装置以外の銃器の製造業者
* 08 破壊装置以外の銃器の輸入業者
* 09 破壊装置の販売業者
* 10 破壊装置の製造業者
* 11 破壊装置の輸入業者
謝辞
このデータは、司法省酒類・たばこ・銃器・爆発物局によってタブ区切り形式で[オンライン公開されています](https://www.atf.gov/firearms/listing-federal-firearms-licensees-ffls-2017)。ここに公開する前に、軽微な修正を加えて`CSV`ファイルに変換されています。
啓発
* このデータをジオコーディングして、ライセンスを持つ銃器店の分布を特定できますか？
* 異なる種類の銃器ライセンスの分布はどのようになっていますか？
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