id	keyword
ertr-210	tourism
ertr-210	generation
ertr-210	research
ertr-210	travel
ertr-210	table
ertr-210	review
ertr-210	vol
ertr-210	ertr
ertr-210	http://ertr.tamu.edu/
ertr-210	tourism research
ertr-210	market
ertr-210	accommodation
ertr-210	youth
ertr-210	preferences