National Soil Services Centre. <br/><br/>
The national action program(NAP) to combat land degradation /   
National Soil Services Centre(NSSC), Department of Agriculture. 
 - Thimphu :  National Soil Services Centre(NSSC),Ministry of Agriculture and Forests,  2011. 
 - 121 p.  illus.  28 cm. 
<br/><br/><label>LCCN: </label>62008770 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation--Bhutan.<br/>Soil fertility.<br/>Soil management.