Nkonya, Ephraim …[et al.]. Assessing the economic benefits of sustainable land management practices in Bhutan / - Thimphu, Bhutan : National Soil Services Centre, Ministry of Agriculture and Forests, c2014. - viii, 54 p. : ill. ; 29 cm. ISBN: NA LC Class. No.: GD00273 & GD00304-GD00305 Dewey Class. No.: A3.1 / NSSC Gov. Doc. Class. No.: A3.1