Gai seki https://speakerdeck.com/gai0210 2016-06-16 05:50:14 -0400 Gai seki Thu, 14 Jul 2016 00:00:00 -0400 https://speakerdeck.com/gai0210/gai-seki https://speakerdeck.com/gai0210/gai-seki 空間情報システム入門＃２ Thu, 16 Jun 2016 00:00:00 -0400 https://speakerdeck.com/gai0210/kong-jian-qing-bao-sisutemuru-men-2 https://speakerdeck.com/gai0210/kong-jian-qing-bao-sisutemuru-men-2