id	keyword
ertr-297	gift
ertr-297	mauss
ertr-297	tourism
ertr-297	hospitality
ertr-297	research
ertr-297	system
ertr-297	vol
ertr-297	ertr
ertr-297	author
ertr-297	review
ertr-297	http://ertr.tamu.edu/
ertr-297	society