International Board for Soil Research and Management (IBSRAM) <br/><br/>
The management of lowland clayey soils after rice in Asia : proceedings of the First International Workshop on the Management of Lowland Clayey Soils for Upland Crops after Rice in Asia, Khon Kaen, Thailand. 19-24 March 1990 

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