《GSTC CEO Randy Durband speaks about “Applying Standards to Sustain Experience Delivery” at the Mekong Tourism Forum 2016, Sihanoukville, Cambodia》的评论 https://www.gstc.org/mtf2016-randy-durband/?lang=zh-hans Global Sustainable Tourism Council: Sustainable Travel & Tourism, GSTC Criteria, Certification Sun, 10 Jul 2016 12:28:00 +0000 hourly 1