id	keyword
ertr-343	tourism
ertr-343	sustainability
ertr-343	environmental
ertr-343	tourism research
ertr-343	management
ertr-343	destinations
ertr-343	practices
ertr-343	tourism practices
ertr-343	development
ertr-343	tourism development
ertr-343	vol
ertr-343	energy
ertr-343	water
ertr-343	review
ertr-343	waste
ertr-343	conservation
ertr-343	ertr
ertr-343	study