National Statistics Bureau. Statistical yearbook of Bhutan 2015 / - Thimphu, Bhutan : National Statistics Bureau, October 2015. - x, 292 p. : ill. (some col. graphs) ; 23 cm. ISBN: 9789993628323 LC Class. No.: GD00180-GD00181 Dewey Class. No.: A5.6 / NSB Gov. Doc. Class. No.: A5.6