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One or more of the preceding sentences incorporates text from this source, which is in the public domain. Worden, Robert L. (September 1991). Savada, Andrea Matles (ed.). Bhutan: A Country Study. Federal Research Division. Civil Conflict, 1728–72.
One or more of the preceding sentences incorporates text from this source, which is in the public domain. Worden, Robert L. (September 1991). Savada, Andrea Matles (ed.). Bhutan: A Country Study. Federal Research Division. British Intrusion, 1772–1907.