15 Terms Everyone in the 5 treasures Industry Should Know
http://reidcgye783.yousher.com/why-it-s-easier-to-succeed-with-5-treasures-than-you-might-think
Planet Tourism Business (W.T.O) has described ecotourism as, "Tourism that will involve touring to relatively undisturbed purely natural spots with specified object of studying, admiring & enjoying the landscapes