NA Eternal Knot : A Journey of two nations in time / Institute for Management Studies. - 1st ed. - Thimphu : Institute for Management Studeis, 2014. - 134 P. : col. ill. ; 27 cm. Relations between India and Bhutan from 1949 till 2009. ISBN: 97899936798103 Dewey Class. No.: 327.5405498 / IMS