National Statistics Bureau. Dzongkhag population projections 2017 - 2027 / - Thimphu, Bhutan : National Statistics Bureau, c2019. - v, 262 p. : ill. (some col. pages) ; 28 cm. ISBN: 9789993628736 LC Class. No.: GD00427 Dewey Class. No.: A5.6 / NSB Gov. Doc. Class. No.: A5.6