Druk Holding and Investments. DHI annual report 2013 / - Thimphu, Bhutan : Druk Holding and Investments, 2013. - 79 p. : ill. (some col. graphs and photographs) ; 27 cm. ISBN: NA LC Class. No.: GD00530 Dewey Class. No.: A5.10 / DHI Gov. Doc. Class. No.: A5.10