id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
issue-13	Holub, Mariia	ECOTOURISM CERTIFICATION PROGRAMS: STANDARDS AND BENEFITS	2016	8	.pdf	application/pdf	5154	275	46	Key words: ecological tourism, sustainable development, ecotourism certification, mass and alternative tourism, sustainable tourism. The issue of ecotourism certification is aim of many scientific discussions all over the world.	cache/issue-13.pdf	txt/issue-13.txt