National Statistics Bureau. Statistical yearbook of Bhutan 2019 / - Thimphu, Bhutan : National Statistics Bureau, September 2019. - x, 355 p. : ill. (some col. graphs) ; 24 cm. ISBN: 9789993628422 LC Class. No.: GD00185 Dewey Class. No.: A5.6 / NSB Gov. Doc. Class. No.: A5.6