直升機救援技術: 民用公共安全和軍用直升機救援行動

Hammer

"Helicopter Rescue Techniques: Civilian Public Safety and Military Helicopter Rescue Operations," First edition, October 2013, by the U.S. National Park Service
http://www.mra.org/images/storie ... ual-_10-23-2013.pdf

rowan

将第五十三条改为第五十九条福彩双色球，第二款改为两款，作为第二款澳洲幸运20、第三款，修改为幸运飞艇：“法律被修改的，应当公布新的法律文本。