International Board for Soil Research and Management (IBSRAM) <br/><br/>
Evaluation for sustainable land management in the developing world v.1 : towards the development of an international framework : proceedings of the international workshop, Chiang Rai, Thailand 15-21 September, 1991 

 -  IBSRAM,  1991 
<br/><br/><label>Source: </label> 1999-07-27