International Board for Soil Research and Management (IBSRAM) <br/><br/>
Management of acid tropical soils for sustainable agriculture : proceedings of an IBSRAM inaugural workshop 24 April - 3 May 1985 Yurimaguas, Peru and Brasilia, Brazil 

 -  IBSRAM,  1987 
<br/><br/><label>Source: </label> 1999-07-27